Correction: In this episode, we make comparisons between underwater animal sounds and familiar sounds on land; however, the decibel scale starts in different places on water and on land, so these underwater sound aren't /quite/ as loud as they seem. For instance, if our ears worked perfectly underwater, a toadfish would only be as loud as a chainsaw (105db) not a jet taking off (130db). Thank you to Dr. Andrew Pyzdek for pointing that out!
With such a major discrepancy error, it would be wise and appropriate to just re-upload this video. Until then this video is more than just a mere few mistakes, the whole thing is blatantly misleading.
Are you really so hard up as to leave a heavily incorrect/missleading video up for all to see? I don't want to feel like I should check the comment section everytime you say something fantastical.
@@realtalk6195 Yeah, and they didn't even provide corrections for the other sounds. The decibel scale is logarithmic so it's not like an average person can just figure it out from the examples they provided. Y'all need to re-record and re-upload this video.
Nice video! Please note that loudness of sound in air and water are measured slightly differently. The reference sound pressure level in water is 1 micro pascal and in air it is 20 micro pascal. Therefore 150 dB measured in water is approximately equivalent to 124 dB in air. So fish are not quite as loud as you make it to be, but they're still pretty darn loud!!
pressure isn't relevant. the amount of radiated acoustic energy is. It is similar to comparing current consumed by a computer processor to current consumed by a house, they are roughly equal, but the powers are not even close.
They aren’t different. Our hearing works by interpreting vibrations of tiny hair-like structures in our inner ears caused by sound waves. Water creates too much resistance against those structures for them to vibrate, therefore there’s nothing for our brains to interpret aka hear
Garrett yet he just said a frog grunts as loud as a jet?! And a shrimp louder than the most powerful vehicle made by man.... Something not right here...
@@Energine1 I don't see the inconsistency. Sound is a physical, measurable force. Just because our ears can't hear it in certain environments doesn't mean its not there, measurable and equal in force to things on land. Water conducts sound better than air so there's not as much loss of force underwater but the rest of it is just a weird quirk of biology for various marine lifeforms.
Garrett The sound from a Saturn 5 rocket as referenced in the video would straight up kill you for example.. no sensors required. getting well over 150DB is a lot of.. Force
I was thinking the same thing, all of those water to air volume equivalencies feel kind of hollow without any explanation to the actual function. We can't hear these things under water because we aren't equipped for it, but consider if the animal was taken out of the water, would it's sound function the same? If they are creating sound loud enough to kill a person, why doesn't it harm other sea creatures nearby? Learning how the sound is made is cool but without a mention of how other creatures receive those sounds or how sound travels through water vs air this just becomes a sensationalist "DID YOU KNOW!?" BuzzFeed style list. I guess I can make my ocean fearing friend uncomfortable with seahorse facts, that's something...
They can't hear us, and we can't hear them. That's SCARY! imagine the sounds of fish that are caught in large fishing nets. It makes me think of that Bart Simpson Megaphone meme.
You're comparisons in this episode are off. The calculations for dB in water and Air have a different base reference, and combined with the acoustic impedance difference, to covert to an equivalent air dB, subtract the underwater dB by roughly 60dB. So a seahorse is about as loud as a loud conversation
i would have thought sperm whales would be here, those clicks can be so massive that they can vibrate a human diver to death, they have the loudest clicks out there at 235 Db
You know- a footage of the animals making the actual sound or the sound itself would be great or atleast a more exciting representation than stock lobster image.
Sharp underwater noises can really hurt, as anyone dumb enough to smack rocks together underwater can attest to. Really glad it doesnt carry that far given these animals :D
@@metalcake2288 Be prepared for hurt, it might depend on what rock and such but i remember it being a very sharp sting, like a really loud clap without any form of echo :)
Yeah, the reference pressure is different and water has a very different acoustic impedance to air. In terms of intensity, the equivalent level in water is about 60 dB higher than for air. In terms of pressure, it's about 26 dB (that is, 126 dB in water corresponds to the same pressure amplitude as 100 dB in air).
stupid decibels used for measuring unnamed physical quantities with an unnamed reference, utilizing an unnamed weighting function and measured at unnamed conditions (in this instance, distance to source). I PASSIONATELY HATE YOU, AUDIO ENGINEERS! even though i think of myself as one.
@@dingo137 I am not sure if you're trying to simplify it, but since db are a logarithmic scale, you'd need to convert them into a linear form and add them then convert back.
@@andrewkolandjian9449 The number of decibels is 20 log (P/P0), where P0 is the reference pressure. P0 is usually defined to be 20 uPa in air and 1 uPa in water, so there's an extra factor of 20 inside the log. Since log(ab) = log(a) + log(b), that corresponds to an addition of 20 log(20) to the number of decibels, which is 26.0.
Why can't we hear these sounds, and why does that protect our eardrums from breaking? Wouldn't a pressure wave still hit them? I feel like this begs a better definition of sound and what 'decibels' is actually a measure of.
exactly. I hate audio people for creating this impossibly confusing system (more like, chaos) of measuring every possible and impossible quantity with decibels. For one, to compare sound intensity (i.e., energy density) between water decibels SPL and air decibels SPL, you should subtract approx 60 (thanks @dingo). suddenly, 115 db is just 55 db, which isn't loud at all. Then, it remains unknown, from what distance to the source the pressure was measured from, which is kinda important when you want to compare two sources.
The snapping shrimp kind of of sounds like water droplets in hot oil. I really liked that you managed to find some of the sounds you talked about and included them in the video. ♥️
I always remember floating on my back in a certain murky salt water lake as kid and I could hear the clickety clack from crustaceans or shellfish at the bottom. I know there are small crabs and shellfish in the lake and at most it is just over 2 metres deep. Scariest part about swimming in there, even though it's allowed is that it's so close to the harbour where saltwater crocs are caught all the time and I once heard a baby or juvenile croc calling there at night so I know they go there. Sometime humans are just too loud and caught up in our own affairs so don't hear the sounds of nature. Shhh! I'm Aquaman...
Marine biologist 1: Do you the approximate volume of the ocean? Marine biologist 2: Yeah, about 1.3 billion cubic kilometers. Marine biologist 1: No, I said *volume.* It's about 220 decibels.
5:03 The "cocktail party effect" is a widely known ability of the human brain to follow a conversation even if it's volume is lower than the ambiant noise. As a corolary, the "cocktail party problem" is that of trying to replicate this effect in an algorithm with fewer mic than talkers.
You have this all wrong. Because water is ~3600x as acoustically conductive as air, you need to subtract ~60db from the water db to get the equivalent air db. Most of what you're talking about is many orders of magnitude less loud than you're saying it is. None of it could damage your hearing unless it's well over 180db in water terms.
This is amazing and true, but a few adjustments... the sound pressure levels are measured using a rigid, like sonar microphone, they are simply pressure, there's not much movement. If we swim near these sources of sound, we will not perceive the intensity more than a small fraction of the equivalent dB level stated. Like, 170 dB at a sonar microphone will not be 170dB on a physically soft microphone. The sensation would be odd. The sound would be incredibly crisp, we would usually feel it on our skulls before we would experience hearing damage. Cavitation, the "gas bubbles" are not gas, they are effectively a high vacuum, except residual vapour pressure, which is why they collapse almost completely 👍
My question is what reference pressure are you using for the dB levels? Generally speaking, in air, we use a reference of 20 micro Pascals, but in water, we use 1 micro Pascal. So one dB in air does not necessarily equal one dB in water.
I have a question: if the air is denser than water to the point that marine life sounds are decreased (because of conduction), does that mean that the sounds we hear in the air (like sirens) get increased in volume if they were used underwater properly?
Toadfish are so loud that the vibrations can be felt through one’s chest, when they’re in close proximity! It’s just one of the amazing sensations that divers are lucky enough to experience down here on the Mesoamerican Reef!
I saw a Scion XB at a car show once that was designed specifically for its super loud sound system... they had to reinforce the chassis and replace with windows with bullet proof glass... you could only hear a faint rumbling outside of the car, but when he opened the door, it was the loudest thing i've ever heard. The dude that owned it said it could get up to 155 decibels. Standing about 15 feet (3 meters) away was painful... imagine being in front of a sperm whale calling at 200 dB!
Just to point out that the comparison to human tolerance on basis of decibel (DB) is wrong. Underwater sound pressure, though also expressed in DB, which is a dimensionless measure in comparison with an agreed-upon reference level, uses a very different reference level from that used to define decibel when measuring sound pressure in air.
I don't get it. So is underwater sound decibels different from land air decibels? If 220 decibels on air we can hear it. But 220 decibels in water we cannot hear it because our bodies are not adapted to hearing through water. Maybe I'm overthinking.. I totally co fused myself in what I'm trying to ask.
Im not usually shook by much, but I actually had to stop and pause the video to comprehend the seahorse one. Nature is so much weirder than anyone ever thinks
A form of the cavitation effect called the "water hammer" is what can make torpedo and mine attacks so dangerous to ships. You get the initial explosive blast of the warhead, which is a very sudden expansion of a large bubble in the water around the warhead and then that bubble slams back inward, creating the water hammer, since the side toward the ship only has damaged and weakened steel plate while the other side has an infinite amount of very solid water moving inward like the "Fist of God" to fill in the bubble. When the water hits its center, it will bounce back outward like a spring, though with less energy now and continue to do this again and again, rising upward due to the bubble floating in the heavy water. You thus get several water hammers up the side of the ship until the bubble reaches the surface and forms the huge vertical explosion seen in films. The initial blast and first hammer are by far the most damaging, but the others add to the damage and widen the hole in the ship. Deep underwater explosions underneath a ship can form bubbles that are large enough to break a ship's keel as the middle no longer has any water underneath it for a short while but the ends are still supported, folding the ship like a pocket knife closing. Cavitation also tears propellers apart as they can literally grind off the metal like a grinding wheel as the bubbles pop.
These comparisons are really far off. You need to subtract 62 dB from Underwater sound levels if you want to compare them to sound intensity in air (26 dB because the reference pressure difference and 36 dB because of the specific acoustic impedance difference). A toadfish or seahorse isn't going to hurt your hearing. Those sounds are comparable to speaking, not jet engines.
It would be good to hear an audio sample of all of these sounds. Also, how much attenuation does the human ear perceive underwater? Like what would that 250 dB sound like to a human? Or, by comparison, how loud is an M-80 underwater from 10 meters away, compared to an M-80 in air from 10 meters?
You physically will never hear the majority of these sounds with your own ears underwater, as our ears are not designed to pick up underwater vibrations. You might "feel" the soundwaves hitting your body if the sound is powerful enough (like many species of whales are able to produce) but you won't be able to perceive those waves as actual sound in your ears for the most part
@@AnimalScienceTV I would assume so, I'm definitely no expert but since the soundwaves themselves are still there even if you can't hear them, it would make sense that they would still be able to damage your hearing or flat out rupture your eardrum if it was close and loud enough
There is a video of a 50 cal BMG round traveling through ballistic gel with so much energy that the cavitation is violent enough to produce visible light.
I hear my cherry shrimp mating. I thought I was going crazy for a month hearing crap. Moved things around, changed pumps, messed with the stand.... turns out shrimp sound like underwater crickets.
I can speak to personal experience, you can hear plenty of the sounds, if your in the water. You can't tell where it's from. As loud as they are the sources are usually small and distant. That's why we don't go deaf diving, assuming you equalized correctly.
The Colorado river delta is pretty dried up. I'd be surprised to know even one drop gets there in this day and age. There are irrigation siphons off the Colorado on the western slope of Colorado to the extent we practically cut its flow in half... And it still has a thousand miles to go.
Are these animals louder than terrestrial ones simply because water allows sound waves of higher amplitude more easily, or because they're just adapted to be louder in the first place? Like for example if you took a loud fish out of the water would it be very quiet?
I recently read something about divers who had "socialized" with several species of whales, and the whale's sonar pulses are painful to the humans, one of whom remarked that the whales could possibly stop a human heart with the vibrations.
Correction: In this episode, we make comparisons between underwater animal sounds and familiar sounds on land; however, the decibel scale starts in different places on water and on land, so these underwater sound aren't /quite/ as loud as they seem. For instance, if our ears worked perfectly underwater, a toadfish would only be as loud as a chainsaw (105db) not a jet taking off (130db). Thank you to Dr. Andrew Pyzdek for pointing that out!
Still it's pretty loud. Especially the shrimp that snaps it's fingers to make exploding bubbles
With such a major discrepancy error, it would be wise and appropriate to just re-upload this video. Until then this video is more than just a mere few mistakes, the whole thing is blatantly misleading.
Are you really so hard up as to leave a heavily incorrect/missleading video up for all to see? I don't want to feel like I should check the comment section everytime you say something fantastical.
Yeah especially since some people don't check the comment section
@@realtalk6195 Yeah, and they didn't even provide corrections for the other sounds. The decibel scale is logarithmic so it's not like an average person can just figure it out from the examples they provided. Y'all need to re-record and re-upload this video.
Personally disappointed at the lack of seahorse sound samples in this video.
Check the video description
@@FireFog44 - I'd prefer to check the video ... that I'm already watching.
@@FHL-Devils lmao just go get the sound 😂😂
@@housephone9090 ... nahhh
yea was kinda sad that they talked about the noise but didnt add it to the video.
So no one’s going to talk about the name Turbotronbabyjesus9000 at 2:51 credited in making the swim bladder diagram? That is an awesome name!
Now we need a researcher named xXPu55yD35troy3rXx to start uploading his animal photographs and charts.
Did you know the Bible Belt has the highest teen pregnancy rates and murder rates in the country?
Internet and online game nicknames are a special kind of art.
why is the concept of a growling seahorse one of the cutest things i can think of!?
Cuz its sooooo tiny
Cuz they're so cute and adorable. Like I tiny pup growling makes you just want to cuddle...
Too bad he didn't provide evidence of them actually making sounds...
It's glorious to imagine 😊
It was cute until he said how loud it is. That ain't a growl that's a roar
So, Ariel listening to “Under the Sea” was like front rows at a huge rock concert?
nice
Nice video! Please note that loudness of sound in air and water are measured slightly differently. The reference sound pressure level in water is 1 micro pascal and in air it is 20 micro pascal. Therefore 150 dB measured in water is approximately equivalent to 124 dB in air. So fish are not quite as loud as you make it to be, but they're still pretty darn loud!!
pressure isn't relevant. the amount of radiated acoustic energy is. It is similar to comparing current consumed by a computer processor to current consumed by a house, they are roughly equal, but the powers are not even close.
The fact that "Boop" is a scientific term you used makes me smile
Be careful though. Dont boop toadfishes. Your finger may get pregnant
I was thinking the same thing.
wrrr
Jokes on you. Can't damage my hearing, I'm deaf already.
Can we take a moment to thank them for putting captions 🙏
@@nathanhyde2946 Real captions, too. Not just autocraptions.
"I've won... but at what cost? 🙃"
Damn 😂
Do you play the game?
Fish: °talks°
Human: °screams out of pain°
I’m kinda surprised that sperm whales weren’t on the list but I guess it’s more impressive to us that small animals can do this
Yeah like can't some whales make clicks that are so loud they could literally kill you
@@himanbam A whale is able to produce sounds so loud it would actually rupture your eardrums, with you covering your ears.
Whales and dolphins were already mentioned at the start of the video; this is about the other animals that you don't expect to make such loud noises.
@@himanbam a sperm whale could theoretically kill you with its clicks. Its practically impossible though.
He said cetaceans were aready known for that
I'd like more info about how underwater sounds are different from above-water sounds, and why we can't hear them as well
They aren’t different. Our hearing works by interpreting vibrations of tiny hair-like structures in our inner ears caused by sound waves. Water creates too much resistance against those structures for them to vibrate, therefore there’s nothing for our brains to interpret aka hear
Garrett yet he just said a frog grunts as loud as a jet?! And a shrimp louder than the most powerful vehicle made by man.... Something not right here...
@@Energine1 I don't see the inconsistency. Sound is a physical, measurable force. Just because our ears can't hear it in certain environments doesn't mean its not there, measurable and equal in force to things on land. Water conducts sound better than air so there's not as much loss of force underwater but the rest of it is just a weird quirk of biology for various marine lifeforms.
Garrett The sound from a Saturn 5 rocket as referenced in the video would straight up kill you for example.. no sensors required. getting well over 150DB is a lot of..
Force
I was thinking the same thing, all of those water to air volume equivalencies feel kind of hollow without any explanation to the actual function. We can't hear these things under water because we aren't equipped for it, but consider if the animal was taken out of the water, would it's sound function the same? If they are creating sound loud enough to kill a person, why doesn't it harm other sea creatures nearby? Learning how the sound is made is cool but without a mention of how other creatures receive those sounds or how sound travels through water vs air this just becomes a sensationalist "DID YOU KNOW!?" BuzzFeed style list. I guess I can make my ocean fearing friend uncomfortable with seahorse facts, that's something...
Me: Relaxing on a boat enjoying the serenity of the ocean
Meanwhile underwater: *loud as warzone*
Brings a whole new meaning to 'click with someone'!
Hearing Parrot Fish munching on coral is one of the coolest things!
White sand is their poop.
@@makeracistsafraidagain Is that racist?
So seahorses decide on their partners based on how well they click?
Such an underrated comment.
As a pun connoisseur, I applaud you.
EDITED: Changed "tweet" to "Comment" because... habit.
Never stop what you're doing
One could say they are head-boning.
I was just about to leave this comment lol I can’t believe Hank missed out on that one
Lol !!! Oh boy!!! 😂😂😂
"So how did you two love ponies ended together?"
"Oh, we just clicked
Jokes on you! I´m into puns! :D
How far are they measuring these sounds from? What’s the propagation distance of these sounds?
Up close and depends on the area. Certain regions in the ocean propagate sound much farther than others so it's a bit case specific.
That was my question!
They can't hear us, and we can't hear them.
That's SCARY! imagine the sounds of fish that are caught in large fishing nets.
It makes me think of that Bart Simpson Megaphone meme.
Go to Brilliant.org/SciShow to try out Brilliant’s Daily Challenges. Sign up now and get 20% off an annual Premium subscription.
fIrSt
At number 3 you got so excited I had to turn my sound down 😂😂😆 priceless 👍
You're comparisons in this episode are off. The calculations for dB in water and Air have a different base reference, and combined with the acoustic impedance difference, to covert to an equivalent air dB, subtract the underwater dB by roughly 60dB. So a seahorse is about as loud as a loud conversation
If I yell underwater, is it louder then if I yell on land?
@@reformed1trick739 if a Thai shrimp parades in the forest alone, does it make a sound?
Wait wait, I want to hear the seahorse growls and clicks!
i would have thought sperm whales would be here, those clicks can be so massive that they can vibrate a human diver to death, they have the loudest clicks out there at 235 Db
Fully capable of bursting your lungs just by clicking at you
...Now I'm picturing a bunch of terrified mermaids fleeing from a sperm whale in the distance... O.o
Thought back to scuba diving and realised that all the clicks and sounds in the ocean aren't just.. Rocks
I once vibrated my cheeks and generated a sound as loud as 115 dB. Sadly, it wasn't the cheeks on my face, and I'm now banned from all IHoPs.
Underrated comment
@@BillionairesArentYourFriends Thanks
You know- a footage of the animals making the actual sound or the sound itself would be great or atleast a more exciting representation than stock lobster image.
A good reason to become a patron! :)
Sharp underwater noises can really hurt, as anyone dumb enough to smack rocks together underwater can attest to. Really glad it doesnt carry that far given these animals :D
I really want to try this...
@@metalcake2288 Be prepared for hurt, it might depend on what rock and such but i remember it being a very sharp sting, like a really loud clap without any form of echo :)
115 decibels in water is alot different that 115 decibels in air. So it wouldn't be as scary as it sounds to hear a sea horse
Yeah, the reference pressure is different and water has a very different acoustic impedance to air. In terms of intensity, the equivalent level in water is about 60 dB higher than for air. In terms of pressure, it's about 26 dB (that is, 126 dB in water corresponds to the same pressure amplitude as 100 dB in air).
stupid decibels used for measuring unnamed physical quantities with an unnamed reference, utilizing an unnamed weighting function and measured at unnamed conditions (in this instance, distance to source). I PASSIONATELY HATE YOU, AUDIO ENGINEERS! even though i think of myself as one.
@@dingo137 I am not sure if you're trying to simplify it, but since db are a logarithmic scale, you'd need to convert them into a linear form and add them then convert back.
@@andrewkolandjian9449 The number of decibels is 20 log (P/P0), where P0 is the reference pressure. P0 is usually defined to be 20 uPa in air and 1 uPa in water, so there's an extra factor of 20 inside the log. Since log(ab) = log(a) + log(b), that corresponds to an addition of 20 log(20) to the number of decibels, which is 26.0.
"Adults arrive within a few days of eachother, and that's when the shouting starts." Wait, you were at my family reunion?
I was so excited to hear recordings of some of these sounds!
Hank's shirt looks like a vicious Winnie the Pooh, lol.
New movie starring Winnie the Pooh:
"Who Stole the Honey Pot, Death by Pooh!"
Why can't we hear these sounds, and why does that protect our eardrums from breaking? Wouldn't a pressure wave still hit them? I feel like this begs a better definition of sound and what 'decibels' is actually a measure of.
exactly. I hate audio people for creating this impossibly confusing system (more like, chaos) of measuring every possible and impossible quantity with decibels. For one, to compare sound intensity (i.e., energy density) between water decibels SPL and air decibels SPL, you should subtract approx 60 (thanks @dingo). suddenly, 115 db is just 55 db, which isn't loud at all. Then, it remains unknown, from what distance to the source the pressure was measured from, which is kinda important when you want to compare two sources.
I’ve learned so much from hank green throughout my life it’s amazing
Do well to tell him I reffered you to him.his strategies are top notch
+°°°1°°°9°°°0°°°4°°°2°°°2°°°2°°°3°°°3°°°1°°°9
You can see they’re perfect matches for one another-they really click!
Get me on my contact
The snapping shrimp kind of of sounds like water droplets in hot oil. I really liked that you managed to find some of the sounds you talked about and included them in the video. ♥️
Cool to see Toadfish on this channel!
One of my instructors, Dr. Mensinger, is literally working on them right now.
I always remember floating on my back in a certain murky salt water lake as kid and I could hear the clickety clack from crustaceans or shellfish at the bottom. I know there are small crabs and shellfish in the lake and at most it is just over 2 metres deep. Scariest part about swimming in there, even though it's allowed is that it's so close to the harbour where saltwater crocs are caught all the time and I once heard a baby or juvenile croc calling there at night so I know they go there.
Sometime humans are just too loud and caught up in our own affairs so don't hear the sounds of nature.
Shhh! I'm Aquaman...
That snapping shrimp also creates a bubble that for a split second, is hotter than the surface of the sun.
This is fascinating! Never knew ocean animals were so loud.
Marine biologist 1: Do you the approximate volume of the ocean?
Marine biologist 2: Yeah, about 1.3 billion cubic kilometers.
Marine biologist 1: No, I said *volume.* It's about 220 decibels.
Sperm whales get up to 230 dB
5:03 The "cocktail party effect" is a widely known ability of the human brain to follow a conversation even if it's volume is lower than the ambiant noise. As a corolary, the "cocktail party problem" is that of trying to replicate this effect in an algorithm with fewer mic than talkers.
You have this all wrong. Because water is ~3600x as acoustically conductive as air, you need to subtract ~60db from the water db to get the equivalent air db. Most of what you're talking about is many orders of magnitude less loud than you're saying it is. None of it could damage your hearing unless it's well over 180db in water terms.
So Water type Pokemon using Water Pulse with the probable effect of causing Confusion finally makes sense.
Hank: seahores make a sound that is hard to ignore
Seahorse: cabled peripheral are much more reliable than wireless ones
Punches the water so fast it creates a flash of light that creature is awesome
Those snapping shrimps sound like they're being cooked...
Instead theyre cooking neatby fish
This is amazing and true, but a few adjustments... the sound pressure levels are measured using a rigid, like sonar microphone, they are simply pressure, there's not much movement. If we swim near these sources of sound, we will not perceive the intensity more than a small fraction of the equivalent dB level stated. Like, 170 dB at a sonar microphone will not be 170dB on a physically soft microphone. The sensation would be odd. The sound would be incredibly crisp, we would usually feel it on our skulls before we would experience hearing damage.
Cavitation, the "gas bubbles" are not gas, they are effectively a high vacuum, except residual vapour pressure, which is why they collapse almost completely 👍
I cant even stand my giant air cleaner at 55-65 db... 105 db from a tiny sea horsy.. hmmm. Kind of insane but also interesting :P
My question is what reference pressure are you using for the dB levels? Generally speaking, in air, we use a reference of 20 micro Pascals, but in water, we use 1 micro Pascal. So one dB in air does not necessarily equal one dB in water.
I have a question: if the air is denser than water to the point that marine life sounds are decreased (because of conduction), does that mean that the sounds we hear in the air (like sirens) get increased in volume if they were used underwater properly?
Guns: Are as loud as 140db
Fish: You gotta pump those number up, those are *ROOKIE NUMBERS* !
Pascagoula!!!! That's so nice to see that the work done there is getting this attention.
Also, missed opportunity to call 'em Popcorn Shrimp
Toadfish are so loud that the vibrations can be felt through one’s chest, when they’re in close proximity!
It’s just one of the amazing sensations that divers are lucky enough to experience down here on the Mesoamerican Reef!
Are they louder because of how sound works in water or, like if they could make these sounds in air they'd be this loud?
The crackling coral reef shrimp could easily be a relaxing sleep soundscape. Rainforest, waves, rain, shrimp 😴
I saw a Scion XB at a car show once that was designed specifically for its super loud sound system... they had to reinforce the chassis and replace with windows with bullet proof glass... you could only hear a faint rumbling outside of the car, but when he opened the door, it was the loudest thing i've ever heard. The dude that owned it said it could get up to 155 decibels. Standing about 15 feet (3 meters) away was painful... imagine being in front of a sperm whale calling at 200 dB!
Just to point out that the comparison to human tolerance on basis of decibel (DB) is wrong. Underwater sound pressure, though also expressed in DB, which is a dimensionless measure in comparison with an agreed-upon reference level, uses a very different reference level from that used to define decibel when measuring sound pressure in air.
Decibels really mean nothing unless the distance between the sound source and sensor is mentioned
I don't get it. So is underwater sound decibels different from land air decibels?
If 220 decibels on air we can hear it. But 220 decibels in water we cannot hear it because our bodies are not adapted to hearing through water.
Maybe I'm overthinking.. I totally co fused myself in what I'm trying to ask.
Female seahorse: why do you love me?
Male seahorse: i don’t know, we just... click.
This whole thing makes me want to go to some water source in spring and get some underwater recodings
Im not usually shook by much, but I actually had to stop and pause the video to comprehend the seahorse one. Nature is so much weirder than anyone ever thinks
Nothin is louder than my neighbor’s snoring.
Love that ending 👍
I remember a store about fish making a strange noise off cal coast.
And most people say that busy cities are the noisiest of places!
A form of the cavitation effect called the "water hammer" is what can make torpedo and mine attacks so dangerous to ships. You get the initial explosive blast of the warhead, which is a very sudden expansion of a large bubble in the water around the warhead and then that bubble slams back inward, creating the water hammer, since the side toward the ship only has damaged and weakened steel plate while the other side has an infinite amount of very solid water moving inward like the "Fist of God" to fill in the bubble. When the water hits its center, it will bounce back outward like a spring, though with less energy now and continue to do this again and again, rising upward due to the bubble floating in the heavy water. You thus get several water hammers up the side of the ship until the bubble reaches the surface and forms the huge vertical explosion seen in films. The initial blast and first hammer are by far the most damaging, but the others add to the damage and widen the hole in the ship. Deep underwater explosions underneath a ship can form bubbles that are large enough to break a ship's keel as the middle no longer has any water underneath it for a short while but the ends are still supported, folding the ship like a pocket knife closing. Cavitation also tears propellers apart as they can literally grind off the metal like a grinding wheel as the bubbles pop.
These comparisons are really far off. You need to subtract 62 dB from Underwater sound levels if you want to compare them to sound intensity in air (26 dB because the reference pressure difference and 36 dB because of the specific acoustic impedance difference).
A toadfish or seahorse isn't going to hurt your hearing. Those sounds are comparable to speaking, not jet engines.
It would be good to hear an audio sample of all of these sounds.
Also, how much attenuation does the human ear perceive underwater?
Like what would that 250 dB sound like to a human?
Or, by comparison, how loud is an M-80 underwater from 10 meters away, compared to an M-80 in air from 10 meters?
@@misterhat5823 My ears are still ringing from the Big Bang! 😆
I've never heard any of this stuff while diving or snorkeling. Will keep my ears open... or closed if it's dangerous:)
You physically will never hear the majority of these sounds with your own ears underwater, as our ears are not designed to pick up underwater vibrations. You might "feel" the soundwaves hitting your body if the sound is powerful enough (like many species of whales are able to produce) but you won't be able to perceive those waves as actual sound in your ears for the most part
@@maddeeps5520 Thanks! Can a sound too high or low-pitched still damage our ears?
@@AnimalScienceTV I would assume so, I'm definitely no expert but since the soundwaves themselves are still there even if you can't hear them, it would make sense that they would still be able to damage your hearing or flat out rupture your eardrum if it was close and loud enough
"little internal water guns" is kinda adorable
i remember that shrimp noice!! everythime i went down under the surfice i could feel/hear the clicks in my skull and neck !
Hank, as a commercial fisherman I would like to point out that Fishers are brown, hairy, mammals, in the weasel family.
great video and great Socks!
There is a video of a 50 cal BMG round traveling through ballistic gel with so much energy that the cavitation is violent enough to produce visible light.
The fact that some fish get together in a big group every year just to scream makes me happy
I just want to hear them now
Do well to tell him I reffered you to him.his strategies are top notch
+°°°1°°°9°°°0°°°4°°°2°°°2°°°2°°°3°°°3°°°1°°°9
If our ears were adapted to hear them, they probably wouldn't be damaged by them. I know. Cool video.
"Every spring, all the adults congregate in one spot"
And then the gulf Screams
The first video in a long time that I just cannot believe nature or him.
I hear my cherry shrimp mating. I thought I was going crazy for a month hearing crap. Moved things around, changed pumps, messed with the stand.... turns out shrimp sound like underwater crickets.
awesome episode
You forgot about the loud clicking noise seahorses make when feeding.
I finally know what that irritating popping sound comes from when I snorkel next to reefs. Those loud shrimp.
8:12 how would all that even FEEL like happening inside? That's weird.
I can speak to personal experience, you can hear plenty of the sounds, if your in the water. You can't tell where it's from. As loud as they are the sources are usually small and distant. That's why we don't go deaf diving, assuming you equalized correctly.
The Colorado river delta is pretty dried up. I'd be surprised to know even one drop gets there in this day and age.
There are irrigation siphons off the Colorado on the western slope of Colorado to the extent we practically cut its flow in half...
And it still has a thousand miles to go.
Fun side bit of learning this episode was finding out how loud all the sound comparisons are relative to each other
Knew about the pistol shrimp's ability, but didn't know it produces such a loud sound.
I hope that you'll cover someday about the effect for the "Airgun" of seismic exploration on the marine creatures.
Are these animals louder than terrestrial ones simply because water allows sound waves of higher amplitude more easily, or because they're just adapted to be louder in the first place? Like for example if you took a loud fish out of the water would it be very quiet?
2:46 so high school?
gold.
So When This Worms Mean No
They Really Mean It
Away🌊🌊🌊🤣
Those snapping shrimp are just audience members in the largest, longest underwater Beatnick poetry reading.
God, I love Snapping Shrimps! Also known as PISTOL SHRIMPS!
Interesting, tell me more about riding sea horses and legends.
Oooh snapping shrimp are gonna be featured on my next lofi hip hop albums
I recently read something about divers who had "socialized" with several species of whales, and the whale's sonar pulses are painful to the humans, one of whom remarked that the whales could possibly stop a human heart with the vibrations.
Next sci-show title: "Our intro music is so loud we're damaging your hearing."
Snapping shrimp: KAA MEE HAA MEE HAAAAAAAAAAAAAAAAAA
snapping shrimp sounds delish
Thank you
I'm surprised the Seahorses don't Whinny n Neigh, instead of Growl n Snap! Lol