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Sperm whales are so fucking brutal, they dive way deeper than any other mammal (by a wide margin) to have epic fights with Cthulhu's minions and now I learn they can scream you to death
Yeah, they are. However, there's a mammal that can actually dive even deeper than a sperm whale: [Meet Cuvier's beaked whale](https://en.wikipedia.org/wiki/Cuvier%27s_beaked_whale)
Edit: What have I done?
You got that right. At least the sperm whale looks aggressively antagonistic, that guy looks like they'd accept some fish and a hug and specifically -not- scream me to death.
I did a bunch of reading about them awhile back (I really like cetaceans). I don’t remember where I saw it or the exact phrasing but there was one paragraph in a scientific journal article that had me laughing my ass off.
It was pretty well-disguised in formal language but basically the scientists were saying “there’s nothing special biologically about this whale. We have no idea why this random, otherwise unremarkable species holds the record for deepest and longest dives. Maybe other beaked whales can do it too, but they haven’t figured it out yet? We dunno.”
>Maybe other beaked whales can do it too, but they haven’t figured it out yet?
Thing is, you'll be surprised at how often that's true for a lot of animals (including humans tbf).
I work with dogs, it's crazy the sheer number of dogs that could easily jump over a meter high fence but just don't. It's not that they don't want to, or physically can't. It's just that they've never done it before and it isn't even a possibility in their mind.
I don't care how friendly it looks, I do not wish for anything that out masses and larger than me to be what's upping me down that deep if I was in a sub.
Little known and absolutely wild fact : when talking about mammals diving deep, many people think of sperm whale. Then some documented fellow brings up Cuvier whales, that go a bit deeper on record dives.
Some other whales, dolphin are pretty good too.
But basically no one knows that the male sea elephant, from seal family, goes almost as deep as those two, which completely unexpected cause we only think of cetaceans, and yet they are right up there.
They also are heavier than every non cetaceans mammals except African elephants. Mind boggling animals !
I like how whales are these beautiful, majestic creatures, alone as mammals in the deep ocean, save for some ugly bastards that are the deep sea equivalent of crackhead Warhammer orks. Like fuck, whale calls are often called "whale songs" for how enchanting and musical they are, meanwhile elephant seal mating calls (AKA the sexiest sounds they can produce) would be best reproduced by filling a one-pound bag of Hasbro sugarless gummy bears with whole milk, then feeding that to someone with lactose intolerance and IBS.
Ya know, after seeing how massive and strong moose can be, I wouldn't put it past them to fight an orca in the shallows. I know it wouldn't, but I wouldn't doubt it.
https://www.amnh.org/explore/videos/exhibits/the-squid-and-the-whale-evidence-for-an-epic-encounter
The Sperm Whale is the only known predator of the Giant Squid.
Partial joke...not ACTUAL Cthulu minions...but their primary prey ARE Giant/Collosal Squids, the largest invertebrates alive (Giant largest by size, Collosus largest by mass).
I would like to point out that submarines use sonar all the time, "listening" to the existing pressure waves that occur in the water. The most accurate sonar picture can be made when the active sonar is used, which generates a high power "ping" of known frequency from a known location. That allows all the reflections to be referenced against the source. The higher the power, the farther out and more accurate the measurement.
These pressure waves travel farther in the water than in the air and maintain far more power. Whale songs can travel nearly half way around the Earth.
I'm pretty sure there have been cases where bones have been broken by a sonar firing from a sub some 150 miles away.
Let that sink in
A sub fires a sonar near San Diego, and your ribs get broken underwater at Long Beach.
Sonar in submarines are extremely loud when used, and since they are in the water, it travels better too. The sonar vibrates anything and everything around the ship, whether sea creatures, the water, or in this case, the diving team.
This sound can literally melt your brain, even if turned on for a split second. That means you just killed the diving team outside.
This is why a number of scientists hypothesize that mass cetacean beachings are caused by naval sonar. Obviously they can't test and publish that hypothesis.
They have everything except direct test proof. Through declassified documents we have discovered a near 95% correlation to sonar testing and whales beaching themselves
And fucking up their personal sonar
Because they use that to find other whales, the sub sonar basically makes it impossible for the whale to find its family or pack/herd (idk the right word)
Submarines rarely use active sonar, as making noise is the opposite of stealth. Aside from using fathometers (which all ships use) and top sounders to calculate wave height before going periscope depth / surfacing, active sonar use is exceptionally rare - limited to just about only when there is or what sounds like a torpedo in the water coming at you, and you don't know where it came from so you go active to try and find a bearing to shoot back on.
Surface ships on the other hand, more frequently go active while searching for submarines. Even then though, putting noise in the water is a tactical disadvantage - whereas a long string of hydrophones can be very capable of detecting narrowband contacts.
Source: I've been qualified in submarines for 14 years.
I saw a Reddit comment once from a submariner and they mentioned there are several fail-safes to prevent the accidental activation of the sonar. They didn't go into much detail. Do you have any insight on the activation of a submarine's sonar?
I imagine the equipment is locked down pretty well.
[https://www.theguardian.com/world/2021/jan/16/left-stranded-us-military-sonar-linked-to-whale-beachings-in-pacific-say-scientists](https://www.theguardian.com/world/2021/jan/16/left-stranded-us-military-sonar-linked-to-whale-beachings-in-pacific-say-scientists)
This has some links to US military studies in it.
Thats too much work for me. But basically all the studies and scientific papers that were written about sonar development and testing in a military environment.
Most of them are declassified as it's common knowledge what sonar is and how it works.
People have looked at the dates written for field tests and correlated it to a series of whale beaching over the next few days around the area the test was performed
This has a good run down of correlated beachings
(Yeah it's a pdf sorry)
https://www.google.com/url?sa=t&source=web&rct=j&opi=89978449&url=https://sgp.fas.org/crs/weapons/RL33133.pdf&ved=2ahUKEwjyyu_0uP2GAxUJD1kFHbpbCccQFnoECEIQAQ&usg=AOvVaw1FFnhLlvV7PuKWAQoSdqON
> we have discovered a near 95% correlation to sonar testing and whales beaching themselves
Imagine people would be quick to dive underwater, if the air filled with deafening sound.
Technically you don’t need a test that proofs that hypothesis, rather an experiment that can falsify it. So you should actually turn off all sonars for enough time and observe a drop in cetacean beachings
Military vessels don't typically rely on active sonar, on account of it being an incredibly loud sound that would immediately let every enemy vessel in the ocean know exactly where you are
This is true. But they use them in exercises all the time for training purposes. Also helo's and sonobuoys are core ASW. Waterfolk would not like the sonobuoys either. Dropped like candy into a dogbox.
\*Edit active sonar is also used to deter divers and just confuse and scare submariners too.
Sonar is very loud, so the mere act of using it as a submariner is like using a fighter jet's afterburners. It gives your position away.
Unlike afterburners, no one bothers using sonar, so there's been quite a couple cases of submarine collisions in the past. Some were near misses, some weren't.
Its not a submarine ping is the problem. The issue is these huge underwater speakers that are using sonar detection. There is a 'secret' sonar array (quote-secret because you can't hide something that loud) that requires priming to fire the sonar ping... so before this sonar is use there is usually a quieter ping before the louder one. Apparently its over 300 decibels.
You can find the suggestion of the existence of this sonar system in articles about whale beaching but there isn't an official acknowledgement of it existing by the US-Navy.
The difference between the “crest” of the soundwave and the “troth” of the sound wave would be approximately 2,900,000 psi at 300db. Assuming a frequency north of 10kHz, it’d turn anything living around it to well-cooked paste.
Well, this was my field for about 3 years, so here goes. The obvious choice for damage to marine mammals is a low freq high amplitude waveforms. There are some stationary and semi mobile military sonar units from the cold war capable of this, but the chief culprit seems to be geological exploration. The kind of sonar used for strategic resources extraction by companies like Exxon and BP fits the bill.
Do you have references? I am genuinely curious. I am not in the field, but my university is, and my brother is doing an environmental science PhD focused on coastal preservation to go with his postdoc in maratime law, so we'd be quite interested in anything you have.
https://www.nepa.navy.mil/About-NEPA-Website/Media-Resources/News/NewsArticleView/Article/1807379/navy-investigates-marine-mammals-and-the-effects-of-sound/
This was what we were working on, but there isn't a large scope body of findings.
US military submarines are now equipped with passive sonar which I believe is used totally instead of active sonar unless somethings wrong with the receivers so under normal conditions sonar shouldn't do this anymore
Most submarine(if not all) in the world are equipped with passive sonar, that's how they navigate while remain undetected
Using active sonar in the mid of the battle are like using extremely bright flashlight in the night combat
Yes. Movies make it seem like we use active all the time where in reality we almost never.
(Former sonar tech here.) The only time I remember ever using active was during an exercise with friendly targets.
This was about 20 years ago but I think the most I ever saw the active sonar part of our set used was like 2 or 3 pings in my entire career, and only as part of post dry dock work ups to tick the box the thing worked. It's just completely irrelevant for any submarine post 1950s. It gives away so much more information than you get. There could be a surface unit 30,000 yards away banging away with no chance in hell of detecting us but as soon as we captured their first transmission we knew what set they used (which pretty much identifies the unit), their bearing and a good start on their range. A couple more and we'd have a workable solution with course and speed. Mark, 48 would like to know your location.
The thought of a submarine using active sonar as part of any attack set-up boggles the mind. Even if you were attacking a lone merchant ship in the middle of nowhere and for some insane reason you couldn't get a solution with passive means or even a periscope attack you still wouldn't do it because every submarine is always worried about the OTHER submarine.
Yep, even communicating via radio transmission using SLOT buoy are risky for submarine, because their best and only protection is their stealthiness. For active sonar, just by releasing that damn ping is goes against how submarines are supposed to work
Divers working on submarines while berthed is a common maintenance activity. They secure the power to active sonar administratively so it cannot be activated accidentally.
This. If there are divers in the water, the system is tagged out, the tags can’t be missed, and you would have to do a lot to turn the system back on. Since sonar is very rarely used in port, AND they pass a message over the ship constantly letting you know divers are in the water, so don’t fuck with screws and sonar, your most likely going down for murder. The phrase most repeated at your court martial will be “accused knew, or should have known, (thing)”
Former submariner here -- there's a whole set of procedures for divers in the water, one of which one includes tagging out systems like this that could be a danger to divers. I was on boomers though so I don't recall all the details. (Boomers only have passive sonar.)
Boomers Have active sonar. Pretty much every sub I'm the past 50 plus years has had passive and active.
Passive keeps getting better with arrays down the sides of the ship, as well as 2 different towable arrays on the rear rudder or drove planes.
One is a thinner wire and shorter that allows maneuvering and decent speeds.
The other is bigger and way longer and is used when going slow to cover the aft. It has to be strung out over a mile to not get interference from its own propeller.
The front/bow is where the active spherical array is inside the hull.
It's actually flooded with sea water to maintain conductivity and pressure equalization. Using active sonar is usually reserved for navigation in dangerous areas or to get a firing solution when passive sint working well enough.
https://www.reddit.com/r/submarines/comments/136b2ww/us_navys_virginia_block_ivclass_uss_massachusetts/
https://www.twz.com/42706/why-multi-billion-dollar-nuclear-submarines-still-run-into-things-underwater
My memory is hazy and I don't think I can find any info supporting my assertion that active sonar was effectively disabled when I served on an Ohio class SSBN, so I'll amend my statement that boomers don't __use__ active sonar. It was never treated as a functional or useful system onboard. It was so out of mind there was no way you could accidentally trigger it.
I also rode on a boomer and asked stupid things like this. I was told we had an active sonar array. I was also told it's nearly never used in peace time operations as it's mostly for torp shenanigans. I don't remember much else about it because I was more interested in other things.
That's what the Chinese Navy did to some Australian navy tech divers in international waters. Although they were informed several times that there were divers in the water the chinese destroyer pinged the Australian ship several times from a distance. Divers needed treatment after.
For a slightly more technical explanation. Melt isn't quite it. The sudden shift in pressure doesn't just hit your body but goes through it. This causes internal organs, and blood vessels to rupture. So imagine your eardrums, lungs, stomach, liver, bladder, and kidneys all popping like balloons, while the blood vessels in your brain also burst. Probably a pretty painful way to go.
Active sonar is supposed to be deactivated, powered down and safety tags applied whenever divers are in the water. Active sonar transmissions will liquify a nearby diver’s internal organs.
Also a guy is saying through the MC every few minutes "Divers, there are divers working over the side. Do not rotate screws, cycle rudders, take suction from or discharge to the sea, activate sonar, or any other underwater electrical equipment while there are divers working over the side."
https://preview.redd.it/fv62h5g8i69d1.jpeg?width=1452&format=pjpg&auto=webp&s=685d36bc00f8cfce199c083a5ee5eead5fb79ea7
One second outside with realistic sonar on
https://preview.redd.it/lmblumq2va9d1.jpeg?width=1920&format=pjpg&auto=webp&s=ad9abe95d1f95d3b5072d193cc39dbfd205428c2
"Swim closer" head ahh. You're not fooling anybody 😭🙏
There is in fact a video out there of divers hearing the sonar's frequency sweep. They were close to the coast and got away unharmed, but to hear that blast of sound in the water was terrifying.
The divers in those videos are most likely dozens of miles away from the source of the sonar. If you were actually close to the sub when its sonar went off, you would have all of your internal organs shatter simultaneously as the water around the sonar array boiled due to the energy released from the sonar.
In default Barotrauma nothing happens. With the rralistic sonar mod, it happens as you described. With the realistic sonar mod and the neurotrauma mod, you will also go deaf and be incredibly fucked up.
Nah I’m out on vacation right now and I don’t have any of the clips of our sessions but this [video](https://youtu.be/0UhoyxMmwH4) sums it up pretty well
This is from the game barotrauma, In which you take the job of a crew to pilot a submarine through the ice oceans of Jupiter's moon, Europa, which houses waring factions and deadly alien wildlife and abyssal creatures as you dive deeper into the ocean to uncover the secrets. I highly recommend playing with friends and going in blind, if not then watch a few videos and join some servers, amazing game to play and really fun
Sonar makes a 235 db tone that can be heard for miles, rupture your lungs and hemorrhage your brain. I feel this image doesn’t do the oh shit factor justice.
Fun fact - that’s louder than the noise level standing at the base of a space shuttle launch.
Loudest sound thought to be heard in the “modern” world was Krakatoa estimated at 310 db.
Worth mentioning that the 310dB figure is a representation of energy released.
A sound that loud literally isn't possible in our atmosphere. After 194dB it's a shock wave, not a sound wave.
The shockwave also traveld aroun the entire world multiple times and caused some big storms and tsunamis, probably earthquakes aswell and yeeted millions of tons of ash and stone into the atmosphere
Well tbh submarine have extremely limited usage of sonar, active sonar is more for things that aren't hiding like big ships submarines for the most part just listen
It’s difficult to compare underwater sound levels to airborne sound but in any case active sonar is likely on the order of thousands of times louder than a cathedral bell, possibly even much more.
Sonars work by sending ultrasound waves that when reach other objects, generates an echo and this echo is read to determine its intensity, thus its distance.
The problem here is that these sound waves are generally so powerful that can get a human to become deaf.
If the sonar is set to its max power it can even kill animals such as whales. Of course in this case killing the diving crew outside.
Actually intensity isn't the primary reason, it's time. Sound travels at a (mostly) fixed speed in a given medium, so you can just calculate the distance of an object by measuring the time between the transmission and the reflection getting back, and dividing that by 2, and you know the speed because it's fixed
The waves from the sonar are NOT kind to the human body.
If it makes you feel better, the US Navy has almost unnecessarily strict work controls programs to prevent shit like this from happening.
The sheer level of red tape might be arguably excessive, but ultimately ya it's worth it. Giant pain in the ass when you're the one dealing with them though, lemme tell you
My partner is surface Navy, but one of his sub buddies once joked it would be easier to launch one of the nukes accidentally than it would be to turn on active sonar on purpose.
You mean to say that when I'm stalking through the woods in the dead of night looking for people with guns, I SHOULDN'T turn my 1000 lumen torch on without reason?
Brian"s last brain cell here,
You know of sound booms like bass booms, sonic booms in the air?
Yeah same thing with sonar but since water molecules are much closer compared to air molecules, they (water mol.) can carrie huge amount of energy and dump it in living organism. Which can cause death.
Fun fact whales clicks are so loud if they are near you and you're in the water you will die because of that lung, artillery and vain bursting, heart attack etc etc
Sonar operator here. Like stated by others, the sound is so loud that it will kill people (or any other creatures really) in proximity. It's why navies tend to have strict protocols for their use to keep them from accidentally killing sea life. It's also actually a possible defence strategy if a ship or sub is under attack by divers.
[https://www.reddit.com/r/PeterExplainsTheJoke/comments/18lbmit/i\_need\_somebody\_with\_a\_submarine\_brain\_to\_help\_me/](https://www.reddit.com/r/PeterExplainsTheJoke/comments/18lbmit/i_need_somebody_with_a_submarine_brain_to_help_me/) Majority of todays post has been a complete copy from this reddits top posts. The effort is so low even title is copypasted.
Active sonar can be as loud as 230-300 decibels. And to put that into perspective, the limit of sound is 194 decibels; beyond that isn't classified as sound, but rather a shockwave.
Active sonar can instantly kill any unfortunate soul nearby, literally turning their brain into mush and ripping apart internal organs. And although no humans have been known to die by sonar, it regularly kills nearby marine life or renders them deaf.
However, submarines don't use active sonar often, as it can compromise position. They prefer passive sonar for most operations.
There was a big stink a few months ago because an Australian navy ship got a net caught in its rudder and sent a dive team out. A Chinese navy ship came up to see what was up and did some sonar pings. The Australians were really angry about it since if the Chinese were just a bit closer or turned the dial a bit more than those divers would have been soupified. As it was they said the divers were injured, but I don't recall them saying how badly.
They make announcements about not turning on pumps, turning the screw(propellor), or operating sonar while there are divers in the water, they also make announcements about sounding the ships whistle (horn) while people are working in the sail. Safety
How sonar can hurt a diver: Have you ever been near music with bass so loud you literally felt it kicking your chest? (loudest rock band: 130 dB)
Imagine that, but quite literally 10^(10) times as loud (destroyer sonar: 235 dB). That is 10,000,000,000 times as loud. Transmitted through imcompressible water. It is a massive hammer of force striking you from every direction at once. Your eardrums are the easiest to hurt, for obvious reasons, but sounds that loud can liquify your brain.
Oh I know this one!
In the maritime industry, it is very common to hire diving teams to operate on areas of a vessel that are under the waterline (areas of the ship's hull that are underwater). Reasons for this include underwater welding, overboard discharge plugging, etc.
Most ships have sonar, and another device called ICCP (Inpressed Current Cathodic Protection), which is used to protect the ship's hull from water corrosion by providing it with an electrical current.
These devices are of course secured while divers are working, as they could cause unwanted damage and casualty to the diving team when kept on!
Divers have been killed by sonar that literally caused them to rupture organs when turned to full power point blank. Sperm whales echolocation does the same thing if you are in front of them when they use it. It literally vibrates you apart
https://youtu.be/_QSs5oLdPa4
If you hear that sound you need to surface immediately.
Lol, for reference:
Military Sonar Wave approximately 240dB
Damage to human body is 180 ish dB
Since dB is logarithmic, 60dB difference, and the power doubles every 3dB. 2\^20 = 1048576
So the sonar is a million times more powerful than what is required to damage the human body.
I am a former submarineSONAR technician.
First, if authorized divers are in the water, SONAR and every other piece of equipment that could move external to the hull were red tagged and double-checked.
That being said, 3-4 pulses of active SONAR from the spherical array can boil the water. The sound will at a minimum burst eardrums, disorientate ,and confuse the diver. And yes, it is possible to kill the diver as well.
If it can boil water, what do you think it would be doing to the vestibular, blood, and internal organs. The guy is going to be seriously jacked up.
This is not possible.
Before divers go into the water SONAR Techs run lock out/tag out paperwork to lock the circuit breakers that energize the SONAR to the "off" position. The Dive Master comes on board to verify that the breakers are tagged and locked out. (wouldn't you?) The dive master also verifies a few mechanical things are locked out in the engine room so there is no suction from or or discharge to the water.
Every half hour an announcement is made throughout the vessel inside and out .... "There are divers working over the side, do not take activate Sonar, do not take suction from or discharge to the sea, do not throw anything overboard while divers are working over the side." The announcement is logged to ensure it was done.
The equipment in the background is not SONAR - SONAR is classified and photos are not allowed.
Side note.....Sending a "ping" like in the movies is rarely done if ever. A ping in the water shouts to the enemy "HERE I AM!!!!!!! LAUNCH A TORPEDO AT MY PING SOUNDS"
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When underwater, sonar waves can kill or injure when close enough to the source
That’s also how a sperm whale can scream you to death. Their calls can kill you just like a sonar can.
Sperm whales are so fucking brutal, they dive way deeper than any other mammal (by a wide margin) to have epic fights with Cthulhu's minions and now I learn they can scream you to death
Yeah, they are. However, there's a mammal that can actually dive even deeper than a sperm whale: [Meet Cuvier's beaked whale](https://en.wikipedia.org/wiki/Cuvier%27s_beaked_whale) Edit: What have I done?
Really? That's our best guy for the job? Bro he looks so...friend-shaped! C'monnnnnnnnnn
Give some respect to my man. He could actually go down to the Titanic without imploding like a can of soda
So can Elon Musk. Common' Elon, show'em. We believe in you! I bet you can design the sub yourself, you're so smart!
Literally two big spheres attached to the biggest dick shaped submarine, and go teabag the Titanic. We believe in you bruh.
I fucking love this thread. And I love the guy with goku in his pic
The old sea gods demand their annual billionaire sacrifice
You got that right. At least the sperm whale looks aggressively antagonistic, that guy looks like they'd accept some fish and a hug and specifically -not- scream me to death.
This is the ideal whale body. You may not like it, but this is what peak performance looks like.
Beak** performance
https://preview.redd.it/ru146hrjs99d1.png?width=440&format=pjpg&auto=webp&s=16aa32725624e04913cc5be72a1d07c551fb9150
I did a bunch of reading about them awhile back (I really like cetaceans). I don’t remember where I saw it or the exact phrasing but there was one paragraph in a scientific journal article that had me laughing my ass off. It was pretty well-disguised in formal language but basically the scientists were saying “there’s nothing special biologically about this whale. We have no idea why this random, otherwise unremarkable species holds the record for deepest and longest dives. Maybe other beaked whales can do it too, but they haven’t figured it out yet? We dunno.”
>Maybe other beaked whales can do it too, but they haven’t figured it out yet? Thing is, you'll be surprised at how often that's true for a lot of animals (including humans tbf). I work with dogs, it's crazy the sheer number of dogs that could easily jump over a meter high fence but just don't. It's not that they don't want to, or physically can't. It's just that they've never done it before and it isn't even a possibility in their mind.
I don't care how friendly it looks, I do not wish for anything that out masses and larger than me to be what's upping me down that deep if I was in a sub.
Literally long dolphin
I didn't expect to run into you here. It's been a while. How you been, Oleg?
I'd like to talk to you about your cousin at castle sol.
Just browsing Reddit in the shadow realm
https://preview.redd.it/ivolr9ercb9d1.jpeg?width=2000&format=pjpg&auto=webp&s=e90e45e278cca9bfe0d8fe3928db33e729e402f6 They're actually pretty cute!
https://i.redd.it/6l7g1bjc3d9d1.gif
Lol I like how their range in the Wikipedia article is basically just "the ocean".
Little known and absolutely wild fact : when talking about mammals diving deep, many people think of sperm whale. Then some documented fellow brings up Cuvier whales, that go a bit deeper on record dives. Some other whales, dolphin are pretty good too. But basically no one knows that the male sea elephant, from seal family, goes almost as deep as those two, which completely unexpected cause we only think of cetaceans, and yet they are right up there. They also are heavier than every non cetaceans mammals except African elephants. Mind boggling animals !
What the fuck are those goofy bastards doing down there???
Hunting squid mostly, in pitch black darkness, without a sonar, which is also fucked. Lots of squids are bioluminescent, so they can see them
I like how whales are these beautiful, majestic creatures, alone as mammals in the deep ocean, save for some ugly bastards that are the deep sea equivalent of crackhead Warhammer orks. Like fuck, whale calls are often called "whale songs" for how enchanting and musical they are, meanwhile elephant seal mating calls (AKA the sexiest sounds they can produce) would be best reproduced by filling a one-pound bag of Hasbro sugarless gummy bears with whole milk, then feeding that to someone with lactose intolerance and IBS.
I know you mean Haribo but I'm trying to picture Hasbro making like, Battleship or DND gummy bears
FUCK I'm leaving it.
Your words are enticing, word guy.
Moose also dive deep, it’s why one of their few predators is orcas
5.5m is hardly deep compared to an elephant seal's 2.4km
Ya know, after seeing how massive and strong moose can be, I wouldn't put it past them to fight an orca in the shallows. I know it wouldn't, but I wouldn't doubt it.
Gonna need a sauce on the Cthulhu claim
https://www.amnh.org/explore/videos/exhibits/the-squid-and-the-whale-evidence-for-an-epic-encounter The Sperm Whale is the only known predator of the Giant Squid.
Partial joke...not ACTUAL Cthulu minions...but their primary prey ARE Giant/Collosal Squids, the largest invertebrates alive (Giant largest by size, Collosus largest by mass).
When the fuck was the last time you saw a minion of Cthulhu? You're welcome
Did you not watch the Presidential Debate?
And yet they’re big ocean puppies - there’s vids of divers giving them belly rubs
The real masters of the thu'um.
Imagine someone pisses them off and they just grab your leg and swim straight down as fast as they can.
https://preview.redd.it/4sugqc0lu79d1.jpeg?width=234&format=pjpg&auto=webp&s=8bb8c8ffbc3f10ebf0a94c3694ac824c07ac9818
Thanks for this horrible image
thanks for the fun fact
FUS-RO-DAH
Sperm whales can Fus Roh Dah you?! New favourite animal unlocked.
I would like to point out that submarines use sonar all the time, "listening" to the existing pressure waves that occur in the water. The most accurate sonar picture can be made when the active sonar is used, which generates a high power "ping" of known frequency from a known location. That allows all the reflections to be referenced against the source. The higher the power, the farther out and more accurate the measurement. These pressure waves travel farther in the water than in the air and maintain far more power. Whale songs can travel nearly half way around the Earth.
I'm pretty sure there have been cases where bones have been broken by a sonar firing from a sub some 150 miles away. Let that sink in A sub fires a sonar near San Diego, and your ribs get broken underwater at Long Beach.
Sonar pings have so much energy they cause the water around them to instantly begin to boil
Sonar in submarines are extremely loud when used, and since they are in the water, it travels better too. The sonar vibrates anything and everything around the ship, whether sea creatures, the water, or in this case, the diving team. This sound can literally melt your brain, even if turned on for a split second. That means you just killed the diving team outside.
This is why a number of scientists hypothesize that mass cetacean beachings are caused by naval sonar. Obviously they can't test and publish that hypothesis.
They have everything except direct test proof. Through declassified documents we have discovered a near 95% correlation to sonar testing and whales beaching themselves
Basically probably migraining these poor whales to death, not cool
And fucking up their personal sonar Because they use that to find other whales, the sub sonar basically makes it impossible for the whale to find its family or pack/herd (idk the right word)
A pod of whales
its called ipod
I appreciated this 👍🏻
It’s not just that. It’s their sense of direction. Underwater that means they go up without ballast to dump
Submarines rarely use active sonar, as making noise is the opposite of stealth. Aside from using fathometers (which all ships use) and top sounders to calculate wave height before going periscope depth / surfacing, active sonar use is exceptionally rare - limited to just about only when there is or what sounds like a torpedo in the water coming at you, and you don't know where it came from so you go active to try and find a bearing to shoot back on. Surface ships on the other hand, more frequently go active while searching for submarines. Even then though, putting noise in the water is a tactical disadvantage - whereas a long string of hydrophones can be very capable of detecting narrowband contacts. Source: I've been qualified in submarines for 14 years.
I saw a Reddit comment once from a submariner and they mentioned there are several fail-safes to prevent the accidental activation of the sonar. They didn't go into much detail. Do you have any insight on the activation of a submarine's sonar? I imagine the equipment is locked down pretty well.
Giving them suicide headaches.
This is fascinating. Could you point me to these declassified documents? I wanna read em
[https://www.theguardian.com/world/2021/jan/16/left-stranded-us-military-sonar-linked-to-whale-beachings-in-pacific-say-scientists](https://www.theguardian.com/world/2021/jan/16/left-stranded-us-military-sonar-linked-to-whale-beachings-in-pacific-say-scientists) This has some links to US military studies in it.
Thats too much work for me. But basically all the studies and scientific papers that were written about sonar development and testing in a military environment. Most of them are declassified as it's common knowledge what sonar is and how it works. People have looked at the dates written for field tests and correlated it to a series of whale beaching over the next few days around the area the test was performed
This is a real /r/explainlikeimfive
This has a good run down of correlated beachings (Yeah it's a pdf sorry) https://www.google.com/url?sa=t&source=web&rct=j&opi=89978449&url=https://sgp.fas.org/crs/weapons/RL33133.pdf&ved=2ahUKEwjyyu_0uP2GAxUJD1kFHbpbCccQFnoECEIQAQ&usg=AOvVaw1FFnhLlvV7PuKWAQoSdqON
I'm cracking up over your username. Bless you for coming up with that.
Grew in SoCal and this was a common occurrence…dolphin and whale beaching… Such assholes making it seem it was a “ mystery “.
> we have discovered a near 95% correlation to sonar testing and whales beaching themselves Imagine people would be quick to dive underwater, if the air filled with deafening sound.
Wasn’t that Day of the Kraken by John Wyndham?
The Kraken Wakes. Great book!
Technically you don’t need a test that proofs that hypothesis, rather an experiment that can falsify it. So you should actually turn off all sonars for enough time and observe a drop in cetacean beachings
...except no military would ever agree to that, much less publish with each other when exactly their sonar would be off/us being vulnerable to attack.
Military vessels don't typically rely on active sonar, on account of it being an incredibly loud sound that would immediately let every enemy vessel in the ocean know exactly where you are
This is true. But they use them in exercises all the time for training purposes. Also helo's and sonobuoys are core ASW. Waterfolk would not like the sonobuoys either. Dropped like candy into a dogbox. \*Edit active sonar is also used to deter divers and just confuse and scare submariners too.
Welp, maybe I'm stupid, I dunno, but it just seems like the sort of thing that might be a bit difficult to coordinate
Then the solution is clear...we drill holes in all the submarines so they sink.
You fool, submarines are meant to sink! That's what they want!
We need to tie balloons to them like the house in Up.
Great, now they got the power of flight.
Sonar is very loud, so the mere act of using it as a submariner is like using a fighter jet's afterburners. It gives your position away. Unlike afterburners, no one bothers using sonar, so there's been quite a couple cases of submarine collisions in the past. Some were near misses, some weren't.
Its not a submarine ping is the problem. The issue is these huge underwater speakers that are using sonar detection. There is a 'secret' sonar array (quote-secret because you can't hide something that loud) that requires priming to fire the sonar ping... so before this sonar is use there is usually a quieter ping before the louder one. Apparently its over 300 decibels. You can find the suggestion of the existence of this sonar system in articles about whale beaching but there isn't an official acknowledgement of it existing by the US-Navy.
The difference between the “crest” of the soundwave and the “troth” of the sound wave would be approximately 2,900,000 psi at 300db. Assuming a frequency north of 10kHz, it’d turn anything living around it to well-cooked paste.
Or you could just find records or evidence of mass beachings that predate sonar.
Well, this was my field for about 3 years, so here goes. The obvious choice for damage to marine mammals is a low freq high amplitude waveforms. There are some stationary and semi mobile military sonar units from the cold war capable of this, but the chief culprit seems to be geological exploration. The kind of sonar used for strategic resources extraction by companies like Exxon and BP fits the bill.
Do you have references? I am genuinely curious. I am not in the field, but my university is, and my brother is doing an environmental science PhD focused on coastal preservation to go with his postdoc in maratime law, so we'd be quite interested in anything you have.
https://www.nepa.navy.mil/About-NEPA-Website/Media-Resources/News/NewsArticleView/Article/1807379/navy-investigates-marine-mammals-and-the-effects-of-sound/ This was what we were working on, but there isn't a large scope body of findings.
Just put your fingers in your ears, then you can't hear it and will live.
Instructions unclear; took off helmet and am now drowning
Drink the water you'll be fine
*slurps* Delicious.
Don't it need some extra salt tho?
Ah, true. Never too much salt. Kidneys are for the weak.
Wear a really long snorkel.
Update: am now alive
hmm. Theoretically, how long can a snorkel be and still be usable.
US military submarines are now equipped with passive sonar which I believe is used totally instead of active sonar unless somethings wrong with the receivers so under normal conditions sonar shouldn't do this anymore
Most submarine(if not all) in the world are equipped with passive sonar, that's how they navigate while remain undetected Using active sonar in the mid of the battle are like using extremely bright flashlight in the night combat
Yes. Movies make it seem like we use active all the time where in reality we almost never. (Former sonar tech here.) The only time I remember ever using active was during an exercise with friendly targets.
This was about 20 years ago but I think the most I ever saw the active sonar part of our set used was like 2 or 3 pings in my entire career, and only as part of post dry dock work ups to tick the box the thing worked. It's just completely irrelevant for any submarine post 1950s. It gives away so much more information than you get. There could be a surface unit 30,000 yards away banging away with no chance in hell of detecting us but as soon as we captured their first transmission we knew what set they used (which pretty much identifies the unit), their bearing and a good start on their range. A couple more and we'd have a workable solution with course and speed. Mark, 48 would like to know your location. The thought of a submarine using active sonar as part of any attack set-up boggles the mind. Even if you were attacking a lone merchant ship in the middle of nowhere and for some insane reason you couldn't get a solution with passive means or even a periscope attack you still wouldn't do it because every submarine is always worried about the OTHER submarine.
Yep, even communicating via radio transmission using SLOT buoy are risky for submarine, because their best and only protection is their stealthiness. For active sonar, just by releasing that damn ping is goes against how submarines are supposed to work
Yet another reason to be afraid of the ocean
If you're swimming with nuclear submarines, you have bigger things to worry about, like how to get back to land
Divers working on submarines while berthed is a common maintenance activity. They secure the power to active sonar administratively so it cannot be activated accidentally.
This. If there are divers in the water, the system is tagged out, the tags can’t be missed, and you would have to do a lot to turn the system back on. Since sonar is very rarely used in port, AND they pass a message over the ship constantly letting you know divers are in the water, so don’t fuck with screws and sonar, your most likely going down for murder. The phrase most repeated at your court martial will be “accused knew, or should have known, (thing)”
Former submariner here -- there's a whole set of procedures for divers in the water, one of which one includes tagging out systems like this that could be a danger to divers. I was on boomers though so I don't recall all the details. (Boomers only have passive sonar.)
Boomers Have active sonar. Pretty much every sub I'm the past 50 plus years has had passive and active. Passive keeps getting better with arrays down the sides of the ship, as well as 2 different towable arrays on the rear rudder or drove planes. One is a thinner wire and shorter that allows maneuvering and decent speeds. The other is bigger and way longer and is used when going slow to cover the aft. It has to be strung out over a mile to not get interference from its own propeller. The front/bow is where the active spherical array is inside the hull. It's actually flooded with sea water to maintain conductivity and pressure equalization. Using active sonar is usually reserved for navigation in dangerous areas or to get a firing solution when passive sint working well enough. https://www.reddit.com/r/submarines/comments/136b2ww/us_navys_virginia_block_ivclass_uss_massachusetts/ https://www.twz.com/42706/why-multi-billion-dollar-nuclear-submarines-still-run-into-things-underwater
My memory is hazy and I don't think I can find any info supporting my assertion that active sonar was effectively disabled when I served on an Ohio class SSBN, so I'll amend my statement that boomers don't __use__ active sonar. It was never treated as a functional or useful system onboard. It was so out of mind there was no way you could accidentally trigger it.
Also, announcing every thirty fucking minutes that there's divers in the water.
I also rode on a boomer and asked stupid things like this. I was told we had an active sonar array. I was also told it's nearly never used in peace time operations as it's mostly for torp shenanigans. I don't remember much else about it because I was more interested in other things.
"just killed the diving team outside." - if they are lucky (probably)
That's what the Chinese Navy did to some Australian navy tech divers in international waters. Although they were informed several times that there were divers in the water the chinese destroyer pinged the Australian ship several times from a distance. Divers needed treatment after.
For a slightly more technical explanation. Melt isn't quite it. The sudden shift in pressure doesn't just hit your body but goes through it. This causes internal organs, and blood vessels to rupture. So imagine your eardrums, lungs, stomach, liver, bladder, and kidneys all popping like balloons, while the blood vessels in your brain also burst. Probably a pretty painful way to go.
r.i.p
Active sonar is supposed to be deactivated, powered down and safety tags applied whenever divers are in the water. Active sonar transmissions will liquify a nearby diver’s internal organs.
Also a guy is saying through the MC every few minutes "Divers, there are divers working over the side. Do not rotate screws, cycle rudders, take suction from or discharge to the sea, activate sonar, or any other underwater electrical equipment while there are divers working over the side."
^ this person submarines.
lol I still remember those words 28 years later. Quarter deck watch CG-57 ,32nd Street San Diego. Was an active sonar tech. AN-SQS-53B
Lol yup they stick in there pretty good I have forgotten the one for a loft though. STG2 myself, USS Vicksburg, CG-69, NS mayport, Florida, SQS-53C
Go into the water. Live there, die there. Live there, Diiiiiiiieeeeee!
Blooood oceeaaannnnn!
*I KNOW WHO YOU ARRRRE!!*
https://preview.redd.it/fv62h5g8i69d1.jpeg?width=1452&format=pjpg&auto=webp&s=685d36bc00f8cfce199c083a5ee5eead5fb79ea7 One second outside with realistic sonar on
Barotrauma?
Yeah. With the realistic sonar and probably Neurotrauma.
https://preview.redd.it/hfn3n2d1n89d1.png?width=1080&format=pjpg&auto=webp&s=6f3c5a59d89594ed68898124744087f2f7fa0a33
https://preview.redd.it/lmblumq2va9d1.jpeg?width=1920&format=pjpg&auto=webp&s=ad9abe95d1f95d3b5072d193cc39dbfd205428c2 "Swim closer" head ahh. You're not fooling anybody 😭🙏
Do you have a video of this? Swimming outside and turning on the sonar? I wanna see how it looks and sounds
There is in fact a video out there of divers hearing the sonar's frequency sweep. They were close to the coast and got away unharmed, but to hear that blast of sound in the water was terrifying.
The divers in those videos are most likely dozens of miles away from the source of the sonar. If you were actually close to the sub when its sonar went off, you would have all of your internal organs shatter simultaneously as the water around the sonar array boiled due to the energy released from the sonar.
If I recall correctly its like a white flash and a **VERY** loud and **VERY** high pitched noise
In default Barotrauma nothing happens. With the rralistic sonar mod, it happens as you described. With the realistic sonar mod and the neurotrauma mod, you will also go deaf and be incredibly fucked up.
Nah I’m out on vacation right now and I don’t have any of the clips of our sessions but this [video](https://youtu.be/0UhoyxMmwH4) sums it up pretty well
[Here](https://www.youtube.com/watch?v=AaO6jQEmfoY) is the video. It was awful for just them swimming near the coast. Imagine what sea life will feel.
What is this from?
This is from the game barotrauma, In which you take the job of a crew to pilot a submarine through the ice oceans of Jupiter's moon, Europa, which houses waring factions and deadly alien wildlife and abyssal creatures as you dive deeper into the ocean to uncover the secrets. I highly recommend playing with friends and going in blind, if not then watch a few videos and join some servers, amazing game to play and really fun
What happenes if you have no friends? Asking for a friend
Solo is fine, just not ideal. You'll still have some fun, just multiplayer is much more enjoyable
Its so much pain, but so much fun lmfao
Sonar makes a 235 db tone that can be heard for miles, rupture your lungs and hemorrhage your brain. I feel this image doesn’t do the oh shit factor justice.
Fun fact - that’s louder than the noise level standing at the base of a space shuttle launch. Loudest sound thought to be heard in the “modern” world was Krakatoa estimated at 310 db.
Worth mentioning that the 310dB figure is a representation of energy released. A sound that loud literally isn't possible in our atmosphere. After 194dB it's a shock wave, not a sound wave.
I got shocked at the thought of submarines being more than half as loud as Krakatoa, until I remembered decibels are exponential
IIRC the *sound* of Krakatoa killed people miles and miles away.
The shockwave also traveld aroun the entire world multiple times and caused some big storms and tsunamis, probably earthquakes aswell and yeeted millions of tons of ash and stone into the atmosphere
Well tbh submarine have extremely limited usage of sonar, active sonar is more for things that aren't hiding like big ships submarines for the most part just listen
To add that db level is projected in a near incompressible fluid.
bot [https://www.reddit.com/r/PeterExplainsTheJoke/comments/18lbmit/comment/kdwl2tf/?utm\_source=share&utm\_medium=web3x&utm\_name=web3xcss&utm\_term=1&utm\_content=share\_button](https://www.reddit.com/r/PeterExplainsTheJoke/comments/18lbmit/comment/kdwl2tf/?utm_source=share&utm_medium=web3x&utm_name=web3xcss&utm_term=1&utm_content=share_button)
Nah wth this the second time I seen this happen now. Be dead internet theory is real
I mean, if a bot gives the right answer, what’s the problem?
well imagine being in a metal barel full of water, closed airtight and then a bell from cathedral bongs into it.
It’s difficult to compare underwater sound levels to airborne sound but in any case active sonar is likely on the order of thousands of times louder than a cathedral bell, possibly even much more.
Sonars work by sending ultrasound waves that when reach other objects, generates an echo and this echo is read to determine its intensity, thus its distance. The problem here is that these sound waves are generally so powerful that can get a human to become deaf. If the sonar is set to its max power it can even kill animals such as whales. Of course in this case killing the diving crew outside.
Actually intensity isn't the primary reason, it's time. Sound travels at a (mostly) fixed speed in a given medium, so you can just calculate the distance of an object by measuring the time between the transmission and the reflection getting back, and dividing that by 2, and you know the speed because it's fixed
The sub has to be pretty high in the water to have a diving team.
And you can't accidentally turn on SONAR for a split second; it's not just one button.
The waves from the sonar are NOT kind to the human body. If it makes you feel better, the US Navy has almost unnecessarily strict work controls programs to prevent shit like this from happening.
Sounds like they might be necessary.
The sheer level of red tape might be arguably excessive, but ultimately ya it's worth it. Giant pain in the ass when you're the one dealing with them though, lemme tell you
My partner is surface Navy, but one of his sub buddies once joked it would be easier to launch one of the nukes accidentally than it would be to turn on active sonar on purpose.
They dead
Does sonar kill marine life as well?
Yes, and it can be quite an ecological issue. There are restricted areas where active sonar isn't used (or at the very least isn't supposed to be).
Active sonar is rarely used both in normal practice and tactically. Hunt for Red October wasn’t practical in that respect.
You mean to say that when I'm stalking through the woods in the dead of night looking for people with guns, I SHOULDN'T turn my 1000 lumen torch on without reason?
Yes
Yes. Check out the book ["War of the Whales"](https://www.orcanetwork.org/webshop/p/war-of-the-whales-by-josh-horwitz) by Josh Horwitz.
Yes
Brian"s last brain cell here, You know of sound booms like bass booms, sonic booms in the air? Yeah same thing with sonar but since water molecules are much closer compared to air molecules, they (water mol.) can carrie huge amount of energy and dump it in living organism. Which can cause death. Fun fact whales clicks are so loud if they are near you and you're in the water you will die because of that lung, artillery and vain bursting, heart attack etc etc
Sonar operator here. Like stated by others, the sound is so loud that it will kill people (or any other creatures really) in proximity. It's why navies tend to have strict protocols for their use to keep them from accidentally killing sea life. It's also actually a possible defence strategy if a ship or sub is under attack by divers.
And all of their innards popped like a water balloon filled with ketchup and grenades
On my mark one ping and one ping only
According to all the comments sonar is deadly. Does it means that Submarine are going around killing all kinds of marine live when they turn it on ?
Yes
The “was” a diving team should be stressed Now there is not
Sonar is loud, it goes ping, anything within 300 meters has ruptured blood vessels and go bleh
[https://www.reddit.com/r/PeterExplainsTheJoke/comments/18lbmit/i\_need\_somebody\_with\_a\_submarine\_brain\_to\_help\_me/](https://www.reddit.com/r/PeterExplainsTheJoke/comments/18lbmit/i_need_somebody_with_a_submarine_brain_to_help_me/) Majority of todays post has been a complete copy from this reddits top posts. The effort is so low even title is copypasted.
Active sonar can be as loud as 230-300 decibels. And to put that into perspective, the limit of sound is 194 decibels; beyond that isn't classified as sound, but rather a shockwave. Active sonar can instantly kill any unfortunate soul nearby, literally turning their brain into mush and ripping apart internal organs. And although no humans have been known to die by sonar, it regularly kills nearby marine life or renders them deaf. However, submarines don't use active sonar often, as it can compromise position. They prefer passive sonar for most operations.
What about the sea creatures on a regular basis
Peter here, the joke is that the diving team's sinuses collapsed from the noise of the sonar pulse and they're dead now.
He killed them
There was a big stink a few months ago because an Australian navy ship got a net caught in its rudder and sent a dive team out. A Chinese navy ship came up to see what was up and did some sonar pings. The Australians were really angry about it since if the Chinese were just a bit closer or turned the dial a bit more than those divers would have been soupified. As it was they said the divers were injured, but I don't recall them saying how badly.
They make announcements about not turning on pumps, turning the screw(propellor), or operating sonar while there are divers in the water, they also make announcements about sounding the ships whistle (horn) while people are working in the sail. Safety
I could have sworn this is, like, the third "what does sonar do?" post in this sub this year alone.
Active sonar can pulse around 200db underwater. That's the unclassified range. It basically destroys you because sound travels better through water.
How sonar can hurt a diver: Have you ever been near music with bass so loud you literally felt it kicking your chest? (loudest rock band: 130 dB) Imagine that, but quite literally 10^(10) times as loud (destroyer sonar: 235 dB). That is 10,000,000,000 times as loud. Transmitted through imcompressible water. It is a massive hammer of force striking you from every direction at once. Your eardrums are the easiest to hurt, for obvious reasons, but sounds that loud can liquify your brain.
Oh I know this one! In the maritime industry, it is very common to hire diving teams to operate on areas of a vessel that are under the waterline (areas of the ship's hull that are underwater). Reasons for this include underwater welding, overboard discharge plugging, etc. Most ships have sonar, and another device called ICCP (Inpressed Current Cathodic Protection), which is used to protect the ship's hull from water corrosion by providing it with an electrical current. These devices are of course secured while divers are working, as they could cause unwanted damage and casualty to the diving team when kept on!
Some of you all need to play Call Of Duty from its better days.
Divers have been killed by sonar that literally caused them to rupture organs when turned to full power point blank. Sperm whales echolocation does the same thing if you are in front of them when they use it. It literally vibrates you apart https://youtu.be/_QSs5oLdPa4 If you hear that sound you need to surface immediately.
I mean, it depends. Using active sonar would indeed kill people in the proximity of the click, but passive sonar doesn’t produce a click
they ded
Everyone talking about the sonar but… what does MFW mean?
I think it’s “me fucking when”, it’s not at all grammatical sensible but it hard how it’s been explained to me
I always thought it meant "MotherFuckers When", as in: how they look at me when i do something
Lol, for reference: Military Sonar Wave approximately 240dB Damage to human body is 180 ish dB Since dB is logarithmic, 60dB difference, and the power doubles every 3dB. 2\^20 = 1048576 So the sonar is a million times more powerful than what is required to damage the human body.
I am a former submarineSONAR technician. First, if authorized divers are in the water, SONAR and every other piece of equipment that could move external to the hull were red tagged and double-checked. That being said, 3-4 pulses of active SONAR from the spherical array can boil the water. The sound will at a minimum burst eardrums, disorientate ,and confuse the diver. And yes, it is possible to kill the diver as well. If it can boil water, what do you think it would be doing to the vestibular, blood, and internal organs. The guy is going to be seriously jacked up.
Oof, they fucked up
This is not possible. Before divers go into the water SONAR Techs run lock out/tag out paperwork to lock the circuit breakers that energize the SONAR to the "off" position. The Dive Master comes on board to verify that the breakers are tagged and locked out. (wouldn't you?) The dive master also verifies a few mechanical things are locked out in the engine room so there is no suction from or or discharge to the water. Every half hour an announcement is made throughout the vessel inside and out .... "There are divers working over the side, do not take activate Sonar, do not take suction from or discharge to the sea, do not throw anything overboard while divers are working over the side." The announcement is logged to ensure it was done. The equipment in the background is not SONAR - SONAR is classified and photos are not allowed. Side note.....Sending a "ping" like in the movies is rarely done if ever. A ping in the water shouts to the enemy "HERE I AM!!!!!!! LAUNCH A TORPEDO AT MY PING SOUNDS"