The Evolution of Hammerhead Sharks

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Hammerhead Sharks are truly iconic fish, but how did they evolve to look like that? And what are the hammers actually used for?
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Sources:
www.nhm.ac.uk/discover/shark-...
www.elasmo-research.org/educat...
en.wikipedia.org/wiki/Hammerh...
www.sciencedaily.com/releases...
www.livescience.com/6478-hamm...
www.bbc.co.uk/earth/story/2015...
www.newscientist.com/article/...
jeb.biologists.org/content/21...
www.elasmo-research.org/educat...
www.sciencedirect.com/science...
www.sciencedirect.com/science...
www.cell.com/current-biology/...
link.springer.com/article/10....
www.nature.com/articles/364494a0

Опубликовано:

22 июл 2024

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Комментарии : 369

@BenGThomas 5 лет назад

Due to complications, today’s video is the Evolution of Hammerhead Sharks! Sorry about this, that means the message at the end is intended for Saturday's video, and we’ll have our pick for the five weirdest sharks out tomorrow! Enjoy!

@Frogboyaidan 5 лет назад

Pin this comment not my comet your comment been don't what yours to gear lost in the shark infessted sea of comments

@BenGThomas 5 лет назад

@@Frogboyaidan Thought we already had...

@ethankennan212 4 года назад

Do you think a viral infection might have caused the rapid evolution of the cephalofoils in Hammerhead Sharks? I heard that viruses can contribute to evolution through the genes they add to the genome coding for another mutation in addition to the one that makes more viruses.

@mazzbrandyandrew1889 4 года назад

Hi Ben I am a huge fan

@user-kd9tp6um8y 4 года назад

sorry to ask, i have been followed your channel for a while since your videos are so great with such outstanding quality. But as a Chinese, it's pretty hard to get some specific words in the video, this does frustrate me a lot to miss the interesting point in it. So could you provide the text of the video or add the subtitle in the youtube channel for me? I will really appreciate that!!! By the way, the autotranslation is always kind of dummy, and that really irritates me...

@parmaxolotl 5 лет назад

Most animals when they want binocular vision: "Alright, ima move these up front." Sharks when they want binocular vision: "H A M M E R"

@noahlauret4354 4 года назад

W I D E

@katyungodly 4 года назад

H A M M E R T I M E

@windubitably 4 года назад

Sharks: gimme binostril olfaction

@octopn7240 5 лет назад

when you create your character with maxed out eye width

@RedStefan 5 лет назад

In Spore Animal creation phase

@lotionman1507 5 лет назад

tierzoo ftw

@TheCookieGamer523 5 лет назад

*besthesda would like to know your location*

@gerardmurphy8278 5 лет назад

😂👍🏼

@couldntthinkofayoutubename6498 4 года назад

Tier zoo

@wishbone346 5 лет назад

As a little kid I always assumed they used their heads like a hammer to beat their prey to death, lol.

@yesno8273 3 года назад

I dont blame you, they called it the “HAMMER head” you would think the hammer is used as a weapon

@florianbossu4266 3 года назад

It would be very fun to watch if it was true😂😂 maybe not for the prey though🤣

@Hazelpupps 3 года назад

they don't?

@crashed6510 3 года назад

I remember my fourth grade teacher telling us that's how they hunted

@mouth7137 3 года назад

Terror birds pretty much do what you said

@cake_9510 2 года назад

At certain angles, hammerheads look absolutely ridiculous and I love it

@bkjeong4302 5 лет назад

It should be noted great hammerheads are quite unusual among hammerheads in focusing on large prey like stingrays and other sharks; most hammerheads prefer small fish and squid. Aside from detecting prey, videos of great hammerheads hunting also show them using their cephalofoils to ram or pin down large prey just prior to biting down on it.

@chrisccc22 6 месяцев назад

As another note. Hammerhead shark pups are pretty well abandoned at birth. There is no mothering phase. Infant mortality is very high with Hammerheads. They have far more pups than other species of sharks. Their cephalofoils enables them to maneuver faster, as a means of species survival. Hence the study of juvenile comparisons.

@craigstephenson7676 5 лет назад

Hammerheads are a prime example of gimmicks that work

@kylecupp9649 4 года назад

Just think, there was a time where this was just a mutated animal and then it conquered.

@danielkorladis7869 Год назад

@@kylecupp9649 "jane's got a weird looking head but damn, she's crushing it in the stingray hunting"

@hailgiratinathetruegod7564 5 лет назад

STOP HAMMERTIME*

@zitools 5 лет назад

I saw a comment somewhere that trumps campaign song should be "can't touch this".

@stephencook7337 4 года назад

Hail Giratina The true god 🤦🏾‍♂️

@beastmaster0934 4 года назад

Fun Fact: The Bonnethead is the first ever confirmed omnivorous shark.

@haroldotrotter9148 4 года назад

What about whale, basking or megamouth sharks? They technically eat micro plants. Unless u mean non filter feeding

@mcgrawnelson4722 3 года назад

@@haroldotrotter9148 most filter feeders primary food source is krill, so while they may eat algea and small plants by accident, it isnt a large part of their calorie intake. filter feeding is generally considered to be carnivorous.

@FlatlandMando 3 года назад

Carrots?, cauliflower?

@placeholder7213 2 года назад

@@FlatlandMando grass,sea grass

@brolacoleo1619 2 года назад

Isn’t there still a theory that bonnetheads accidentally eat the grass?

@firstcynic92 4 года назад

3:15 "Putting electrodes into the eye..." Ow ow ow ow ow ow ow...

@shadowraith1 5 лет назад

Fascinating, thanks. It's a shame sharks don't fossilize well. Except for teeth. So many ideas on what ancient sharks looked like but, really for the most part there all guesses.

@pansepot1490 5 лет назад

Exactly. I was wondering if hammerhead sharks teeth are recognizable. If not how can we tell if we have them in the fossil record.

@mattrogers5188 5 лет назад

* they're

@mastercharlesdiltardino8058 5 лет назад

@@mattrogers5188 shut up nerd

@mattrogers5188 5 лет назад

@@mastercharlesdiltardino8058 dweeb

@mastercharlesdiltardino8058 5 лет назад

@@mattrogers5188 meat target

@Morganational 5 лет назад

Incredible. They're such odd looking animals, I'm so glad they did not go extinct before we had a chance to see them, but I can't even imagine the strange sharks that *DID* go extinct that we'll never get to see. Great work, thank you for all that you do! 👍

@greatgallade 4 года назад

I just can't get over the way they look. Like God went too crazy on the customize character and put the eyes on max

@thedoruk6324 5 лет назад

Hammerhead Sharks happen when evolution gets ultra *high*

@RCN2820 4 года назад

*ULTRAHAMMERED

@NovaRuner 4 года назад

So basically they are trying to max out visual depth perception, and stereoscopic smell. That is awesome. Plus it just looks cool.🙂👍 🦈

@sharksuperiority9736 2 года назад

One thing I find really cool about Hammerheads is that they are so clearly still sharks, like, if you were to somehow squish their Cephalofoil back into their face, they would look like normal sharks. Their eyes still line up with where they should be, and their neck(?) and mouth look exactly the same as Their less weird cousins

@fuckYTIDontWantToUseMyRealName 5 лет назад

"the bonnethead, which has a shovel-shaped head." Are you sure it's not a bonnet shaped head?

@scottjustscott3730 4 года назад

No the shovelhead has a bonnet shaped head.

@ayaturahim7785 4 года назад

its like greenland and iceland all over again

@mattr2238 4 года назад

Liked for your account name

@cheyennepepper301 3 года назад

You know, I’ve never realized just HOW strange they look until now

@eamesaerospace2805 4 года назад

When you make something as a joke but it works so you roll with it.

@crackedemerald4930 5 лет назад

Odd how the leading edge isn't a straightforward line, but subtly bumpy

@marvalice3455 5 лет назад

That is actually more hydrodynamic than a straight edge. That is why humpback whales have bumpy fins too. Just more ways moving in water is not the same as moving in air

@Stonnin 4 года назад

@@marvalice3455 HOw does that work?

@marvalice3455 4 года назад

@@Stonnin it changes the way the water flows around the edge reducing drage caused by the water swirling around. Air can have different density levels but water cannot, so moving through water without optimizing can actually make the water vacuum you back. It's a huge pain in the ass

@Stonnin 4 года назад

@@marvalice3455 That is awesome to know. Thanks for that

@sebastianjost 3 года назад

@@marvalice3455 very interesting.

@KooblyK 4 года назад

I guess every once in a while you’ll get a dramatic, dominant mutation in a species that’s so useful it sticks around. The first hammerhead probably got called a freak by their sharky peers. But then what made them different turned out to be a really good thing! I think that’s kind of inspiring :)

@danielkorladis7869 Год назад

if it's stupid and it works, it isn't stupid

@flightlesslord2688 5 лет назад

When Thor died after fighting the Midgard Serpent, Mjolnir (his hammer) fell into the sea. One shark was a very selfless and noble shark who also hated giants (or Johtuns which weren't all giant). He was worthy of lifting the hammer, but he didn't have hands, so Odin cast a transfiguration spell onto him and his brethren who were also very worthy, transfuing the hammer and its powers into their heads, and all the descendents of these sharks were also imbued with the POWER OF THOR!!!!

@dirandrous7682 5 лет назад

Which explains the electroreception. God of THUNDER.

@chelsey8737 5 лет назад

I immediately started laughing when I saw Thor in the first sentence because I knew exactly where it was going

@flightlesslord2688 5 лет назад

@@dirandrous7682 EXACLTY?!

@Morganational 5 лет назад

THORSHARK CONFIRMED!

@dumoulin11 5 лет назад

YES! My favourite sharks, thank you!!!

@heysiri4935 5 лет назад

The Shark Week content I *actually* want

@martakeczek6476 5 лет назад

I am really grateful for your vids like this; I adore digging into zoology and evolution of species, but sadly, I tend to be too tired or lack time because of my job; having all those research collected in one place with such nice voice is just wonderful :')

@therealoorage 5 лет назад

Can you do an episode on the specialised lungs/air sacs present in sauropods and tyrannosaurs

@TragoudistrosMPH 4 года назад

also crocodiles and monitor lizards have similar lungs!

@Grand_History 5 лет назад

Why do sharks swim in salt water? Easy; because pepper water makes them sneeze.

@dshe8637 5 лет назад

😁

@dshe8637 4 года назад

@@potatoraider7320 Eww!

@treetheenderhyena1880 4 года назад

*dad jokes*

@christiandeininger1790 4 года назад

Moronic child joke

@mazzbrandyandrew1889 4 года назад

Haha love it

@milesarcher8502 4 года назад

I'm a science teacher, since 1999. I caution my kids to avoid questions like, "what is this used for?" or "why is it like that?". They tend to imply a "plan". Try looking at cool questions like this one, by asking "Why is it successful?".

@Call_Me_Emo1 5 лет назад

*Nobody:* *Ben G Thomas:* "These are some of the most extraordinary animals... " Love this channel though 👍

@BenGThomas 5 лет назад

Hahaha... yeah good point... But they are to be fair...

@Call_Me_Emo1 5 лет назад

@@BenGThomas you really do have some interesting content, and I know full well that the research put into each video must take several hours. One thing I've noticed though about your channel and channels like this one, is that no one seems interested in explaining the phylogeny of plants. Do you have any plans or interest in making videos on some plants??

@DachampsterStudios 5 лет назад

all animals ARE extraordinary though

@Call_Me_Emo1 5 лет назад

@@DachampsterStudios extraordinary indeed 👍

@generaldissatisfaction5397 5 лет назад

@@Call_Me_Emo1 Plants! YES!!

@simianbarcode3011 5 лет назад

this was really fascinating! would love to see one about Otter evolution at some point :)

@magnuspeacock5857 5 лет назад

@Morganational 5 лет назад

You otter make one yourself 👍

@FlyingLampshade 3 года назад

I have to say Ben your RU-vid channel is so so so good, I have watched for probably a few years now and the presentation, narration, illustrations, and the background music. everything about your videos is amazing. no sensationalism, no commercialism, just pure. I would watch everything you post eventually, and one day show my children whos due soon, I hope he loves this stuff because I sure do.

@theangelbelow88 5 лет назад

I hope you guys cover mako sharks in some form, they are my favorite shark of all time 😏

@melvinshine9841 5 лет назад

Two things I wonder about when it comes to hammerheads are why aren't there more of them and why are their dorsal fins shaped the way they are. It sounds like there isn't any disadvantage to having the hammer and those taller than normal dorsal fins must be beneficial in some way since I think most hammerheads have them.

@KahlestEnoch 5 лет назад

Thanks for this video, ever since I saw a picture of a hammerhead shark as a kid I fell in love with them they are the coolest shark

@carptone2056 3 года назад

This sent me down a rabbit hole of shark facts, thank you for rekindling my childhood obsession

@sohopedeco 5 лет назад

I wonder if someone has snapped a picture of a hammerhead with a broken cefalofoil. It must be super weird.

@andrewjennings7306 5 лет назад

So close to 100k

@faurynunes 5 лет назад

The funny part is that if they were already extinct, nobody would guess that they look weird like that since probably they would find just their teeth. Imagine how many extinct sharks are drawn thinking in the sharks of today but in reality they would look very different.

@SpadaccinoLuciano 5 лет назад

It's so true. In reality, probably all of the prehistoric dinosaurs, fish, etc. That we've discovered look nothing like we think they do.

@Dman9fp 4 года назад

We don't know what Megalodon looked like. Most likely Not like an exactly sized up great white, but yeah that's the fun and frustration of it lol, let alone Helicoprion and other odd balls

@danielkorladis7869 Год назад

@@Dman9fp IIRC it's now thought that Megalodon was snubbier and rounder than previously expected, I think?

@Dman9fp Год назад

@Daniel Korladis If someone did speculate that, I'd be Very interested to hear them defend their case... but my gut feeling is they're just trying to make it seem "more realistic" by deliberately making it seem less like a great white. There's no body impression fossils of megalodon, & soft tissue doesn't fossilized well/ unheard of as of present for cenozoic (post dinosaur era) fossil sharks... not saying it's impossible to find/ but from what's known to be out there, seems very unlikely we'll ever know for sure

@dshe8637 5 лет назад

Evolution: Let's increase stereoscopic vision by putting the eyes waaaaay far apart. ...now add in the nostrils and do directional scent too🤔

@lolbored801 4 года назад

Not everyone knows what a bonnet looks like. But everyone knows what a shovel looks like.

@MiraPacku 4 года назад

3:07 those "experiments" look and sound kind of questionable

@ticsyringe9517 3 года назад

Thank you, they didn’t seem like a big deal when I was a kid but the more I learned about biology, the more they confused me

@loog8621 5 лет назад

But do they taste like hammers

@timr7084 5 лет назад

if you say: side to side you better say pickaxe

@carrollmcpherson4530 5 лет назад

So glad you made this Ben. Always struck my curiosity.

@drew-shourd 4 года назад

Very good video, thanx for making and sharing it m8!

@teawrecks1243 5 лет назад

MAXIMUM DERP ACHIEVED

@blessed885 4 года назад

Absolutely great vid full of knowledge this is a 1 stop know it all vid👍

@grimgor3068 4 года назад

love your channel man!

@verablexitasap858 4 года назад

You guys are absolutely amazing!

@AlexandraStarr1974 5 лет назад

Thank you so so much, this is an awesome video, i am now an expert on hammerheads thanks to you =D

@JenFoxworth 4 года назад

My question is, in the future, would they be able to look at the fossils of hammerheads and know that that's what they were? If not, because of all the cartilidge or whatever, could we be missing that in a lot of past animals/sharks too?

@sashimi0003 4 года назад

Well people in the very far future would only have their teeth to look at but Most likely, files would be kept on the animals are alive today.

@antivalidisme5669 5 лет назад

What a week! Awesome series to say the least

@ItsJustMeJackJ 4 года назад

I’m gonna subscribe because I keep watching your content and saying I will sub but forgetting after the video.

@nestrior7733 5 лет назад

Do we have fossil records of the Winghead? I would just assume that Wingheads probably started small, but evolution increased the size over time. That's a much more logical approach to me than them starting with hammers this large. Where would it even come from? In front of that logic it makes sense that the smallest hammer is the most recent as well. While the other species' hammers grew larger, the niche they occupied with smaller hammers opened up again.

@mazzbrandyandrew1889 4 года назад

Ben g Thomas:shows picture of hammerhead with mouth open Me:screams

@robertfletcher3421 5 лет назад

I am very much enjoying learning about sharks.

@TragoudistrosMPH 4 года назад

It's interesting that so many expect evolution to be linear and progressive when genetic mutation is known to be random... We might be lost without genetic trees and molecular clocks...

@Fede_99 3 года назад

Sometimes I come back to videos to re watch them and I just had an interesting idea, I hope you'll do a video about the evolution of filter feeding sharks for shark week 2021

@Snakefinger1000 2 года назад

Very informative thanks.

@sephikong8323 5 лет назад

5:27 This shark has acquired the power of the arrow for itself

@painfulhappiness2940 5 лет назад

Clash requiem

@FelisBX7 2 года назад

Ah, finally, there it is. The Jojo reference I was looking for.

@phillipbrewster6058 4 года назад

I subscribed no just for the excellent content but also for tha ASMR accented voice...

@dolphinboi-playmonsterranc9668 3 года назад

A hammerhead walked into a sand bar The bartender asked him, "Why the wide face?"

@feliciaadams7666 3 года назад

You know you're talking about evolution when you hear "20 million" and think "That's not that long ago"

@harrycolby2302 4 года назад

Thank you... Very informative

@thinkbolt 5 лет назад

Wow great video!

@Zeuseus6609 3 года назад

Once got to swim with a juvenile hammerhead. She was really curious and would come up from behind and below you and just follow you around as you swam.

@patjenkins3032 5 лет назад

You fools! Evolution is a lie! Just kidding. Awesome work.

@fermintenava5911 5 лет назад

Another insightful video ^g^

@gobzanuff5078 5 лет назад

Predator with a prey eyes...

@dshe8637 5 лет назад

Yes, good point

@Ryanwish 3 года назад

the hammerhead sharks are a group of sharks that form the family Sphyrnidae, so named for the unusual and distinctive structure of their heads, which are flattened and laterally extended into a "hammer" shape called a cephalofoil.

@rextheoldsoul7558 5 лет назад

I do hope that you folks make a video on the Green Lantern shark!

@castielabloodwings6301 3 года назад

Hammerhead sharks are so cute!

@humancattoy7767 3 года назад

My favorite sharks. Majestic and magnificent.

@youraveragefan6626 4 года назад

I think Bonnethead sharks are really cute.

@StarlightEater 4 года назад

Hammerheads are just so cool. Its a shame my grandchildren wont get to see live ones.

@danielkorladis7869 Год назад

are they going extinct? that's sad

@StarlightEater Год назад

Lol, the whole ocean goin extinct

@dylanfryer4495 5 лет назад

Love your videos

@dbstewart4496 Год назад

Bow Head Whales are interesting. A video about them would be welcomed if you care to stray from fishes to mammals😀

@markybojens 4 года назад

So the hammerheads have downforce like a Porsche 911 GT3 RS!!! 😍😍😍😍 How cool is that!!!

@dyslexiusmaximus 5 лет назад

best channel ever

@daphneloose5880 5 лет назад

interesting video!! didn't know that hammerhead sharks preyed on stingrays. would love to see the evolution on whale sharks, which is one of my favorite shark species after the great white and nurse shark.

@Scrinwaipwr 5 лет назад

Such cool looking sharks.

@takekingsolxll6299 3 года назад

Always been one of my fav sharks 🦈...

@cennethadameveson3715 5 лет назад

Great video.

@Samurai78420 3 года назад

I am this kind of nerd. Love this channel

@hayliedlr 4 года назад

Can you do a video on Greenland sharks or even sleeper sharks? That of course if you haven't already and if you have then point me in that direction. Thanks. Love your channel

@someone-my1ug 4 года назад

Bloody hammerheads hammering my head while I hammer my head with thoughts of how they got the hammers as their heads!

@scottjustscott3730 4 года назад

It makes perfect sense that the species with the largest cephalofoils diverged earlier. The longer a species experiences a particular selection pressure the more extreme the adaptation. The longer an anatomical trait has been selected for the more developed it would be.

@simontatton5424 3 года назад

now we just need to discover the nail fish

@ludovicopontiggia9519 3 года назад

Any chance we could have a video on rays at some point? BTW, you should add a disclaimer to these videos, warning they are addictive... Well done! :)

@emeilmohammed7390 5 лет назад

Evolution heee heee. Gr8 video doh

@crackedemerald4930 5 лет назад

Why are so many sharks named after another animal? Is that a fish thing? #justfishthings

@plaguerim5608 5 лет назад

Maybe because they were discovered later, so if you take an example, like a pig. It must have been discovered waaaay earlier so when we disvovered more animals we applied these traits that we found on earlier discovered ones. Or just because they uncommonly resemble something and we didn't know what names to give them.

@dshe8637 5 лет назад

Interesting idea

@The_WhitePencil 3 года назад

Scientists have confirmed that hammers were in fact discovered before hammerhead sharks

@complexzay5935 4 года назад

I LOVE the hammerhead shark❤❤❤

@humblemarty 5 лет назад

These guys remind me of a swiffer. Especially when they turn their heads. . . . Or a Roomba.

@therealzilch Год назад

Now I wish that my eyes and nose were extended on stalks like this.

@planescaped 2 года назад

1:11 that's one depressed shark. The original idea for how they evolved could still be applicable to the old OG shark that all the modern hammerheads descend from.

@Tubeite 4 года назад

Would any types of hammerhead ever use their flat head shapes physically to dig around in soft sand to find food such as bits of animal carcass that has been partially buried or to disturb small fish that might be hiding. Or are they only used as an auxiliary supplement for heightened senses.