7 of the Strangest Sharks on Earth

You've heard of the Great White and the Hammerhead-but what about the lesser known but equally fierce sharks? Join Hank Green for a biting look at 7 weird sharks you're sure to love (and fear!) in this new episode of SciShow! Let's go!
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Sources:
Great whites:
www.upi.com/Gr...
(zslpublication...)
elasmo-research...
Greenland sharks:
www.wired.com/...
www.sciencemag...
- (science.science...)
- (www.cell.com/a... )
www.npr.org/se...
www.bbc.com/ne...
Thresher sharks:
www.nationalge...
- (journals.plos.... )
Sawsharks:
elasmo-research...
www.sciencemag...
www.sciencedir...
ocean.si.edu/o...
Goblin sharks:
www.floridamus...
www.wired.com/...
Wobbegongs:
www.floridamus...
otlibrary.com/w...
ocean.si.edu/o...
Frilled sharks:
mentalfloss.com...
www.discovery.c...
www.wired.com/...
marinebio.org/s...
Catsharks:
news.nationalg...
(www.ncbi.nlm.n... )
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Images:
tinyurl.com/ya...
tinyurl.com/y9...
tinyurl.com/yd...
www.flickr.com...
tinyurl.com/y8...
tinyurl.com/y9...
commons.wikime...
tinyurl.com/yc...
• Hunting Strategies of ...
journals.plos....
en.wikipedia.o...
commons.wikime...
commons.wikime...
tinyurl.com/y8...
commons.wikime...
tinyurl.com/yb...
www.eurekalert...
www.eurekalert...
tinyurl.com/y7...
tinyurl.com/yc...
tinyurl.com/y7...
tinyurl.com/ya...
tinyurl.com/y7...
commons.wikime...
commons.wikime...
commons.wikime...
commons.wikime...
tinyurl.com/yc...
www.ncbi.nlm.n...
tinyurl.com/y8...
• Sighting of Rare Chain...

[@Toastmaster_5000]

Uh-huh, uh-huh... * writes in notebook * Sharks are NOT worms

[@reshi606]

Greenland sharks have worms in their eyes mist of the time.

[@zzzzzzzzzzzzzzzzzzzzzzzzz3204]

Kyurem thank you, I will update my nightmares.

[@arthas640]

I dont know, the Dwarf Lanternshark looks kinda like worm with a small fin and if you stuck it on a hook you'd probably catch something. Wouldnt recommend using them in your garden though.

[@LadyDoomsinger]

Who knew?

[@LuxrayLloyd]

XD

[@SwitchFeathers]

Surprised that the Cookie Cutter sharks didn't make this list, being that they're named for the way they grab onto larger fish and just sort of wiggle around in a circle, cutting out "cookie shaped" chunks of flesh to eat. During the cold war, Cookie Cutter sharks often tried to eat submarines, and sometimes damaged their sonar equipment in the process. For a long time, the U.S thought that the Soviets were using some kind of new anti-sonar technology against them until they discovered it was a bunch of misguided sharks.

[@demolisherOfMoney]

cain lOL that’s actually hilarious! These sharks definitely got a taste of iron hahah probably thought it was the bloodiest thing they’ve ever had due to the heavy iron taste

[@Patchwork_Dragon]

That's adorable and also proves that Cookie Cutter sharks aren't the brightest

[@koffieslikkersenior]

@@Patchwork_Dragon They're not that adorable when you see pictures of dolphins with hundreds of round scars, up to 5 cm in diameter.

[@Patchwork_Dragon]

@@koffieslikkersenior i know what they can do, i just think it's funny that they mistook submarines for whales and/or dolphins.

[@koffieslikkersenior]

Patchwork The Noodle it is, and they look funny too, but still... damn

[@abbieq11]

“Remember when they dumped tea in the ocean?”- Greenland shark

[@iangore8563]

Yea good times

[@humblesoldier5474]

"Remember when those strange creatures arrived riding longships to N. America about five hundred years back while hoping islands around our home?" -Old Greenland shark

[@jvdongen1800]

Oh i member

[@cindyzachielrivera373]

this must become a meme now

[@PhoenixAngel429]

Only 1500s sharks will remember

[@scitechian]

Every picture I've ever seen of a thresher shark (viewed from the side) makes it look like it's absolutely horrified that it just had a picture taken of it.

[@mollsgreys5827]

"*GASP* NO PICTURES!"

[@sans9695]

OH NO MY MAKEUP

[@davinlianto1649]

LOL! 🤣 They must be camera-shy! 📷 🦈

[@mal0561]

He’s not very photogenic :c

[@ms.muffin7592]

It looks adorable

[@MonsterMoloch]

How fitting, that the longest living shark looks like it's made out of stone. :)

[@The_Horse-leafs_Cabbage]

Godhelpsaveme is my favorite size of any animal

[@ThatSomethingGuy]

It's a dumb and petty thing, but it frustrates me how often Goblin Sharks are depicted with their jaws extended forward. Yes, that is how they bite/catch prey, but most of the time, their mouth is tucked in and they look like most other Sharks. It's like depicting a missile as an explosion.

[@rohumhossain7992]

And what are missiles usually used for?

[@starmaster5645]

That something Guy I totally agree with you

[@arthas640]

They do the same with alot of snakes, showing their hoods fanned out and their fangs extended like that's how they sit all day.

[@Dygit]

ThatSomethingGuy it’s sort of implied that they don’t though. In my opinion I thought it was obvious

[@jadewelling3459]

it's a pretty good strategy imo...showing the most unique and distinctive features of a species usually increases interest in the animal itself which is what it's all about and helps the animal in the long run

[@TheTexas1994]

I’m glad to watch a shark video that doesn’t claim Megaladons still exist

[@Sparkxtube]

Same, everyone should know they are extinct.

[@mogeroithe]

Oh yes, but they do exist. Sasquatch told me so.

[@DavidDatura]

Indeed! Those idiots.

[@reezethevampire]

I'm sorry, where is your conclusive evidence that they don't? Have you seen every square foot of the ocean all at once to make sure they aren't there?

[@reezethevampire]

@@DavidDatura The real idiots are the people who think they know what's in the ocean.

[@warwasnotinvited]

True shark fans didn't learn anything new, but thoroughly enjoyed the video nevertheless.

[@Cypresssina]

Lol! We should form a club 😂

[@chachob.9698]

And then he says in 2010 it was confirmed Thresher sharks whip thier prey. I've been knowing this since the 90s reading animal books in elementary.

[@Xgmpcnp]

@@chachob.9698 It's also been known for longer than 2016 that Catsharks glow. But oh well, the facts are true nonetheless, despite the timeframes being wrong.

[@yaboyjosh3023]

@@Cypresssina I'm down! lol

[@Cypresssina]

@@yaboyjosh3023 The club that enjoys the fact that they bite 😂

[@crystaleunoia3974]

Nobody: Me: **adds Wobbegong to my vocabulary**

[@thewhovianhippo7103]

*"actually I know loads of people who did that"*

[@vanessabatres1464]

I love sharks. We need to protect them. For as fierce as they are their numbers are getting decimated by over fishing and Shark finning. Thank you for this video ❤🦈

[@bruceshark5501]

We love you, too.

[@elaineb7065]

Pelenato sends his love (my adopted tiger shark from Shark Angels) xxx

[@tree-huggersans-cur4371]

The problem is not overfishing, it’s people overpopulating

[@reshi606]

Wouldn't say they are fierce. Just animals trying to live their life, but that doesn't stop the popular media from demonizing them as bloodthirsty killers. They are actually pretty friendly.

[@eggroll3055]

Nah.

[@cshields921]

I teach biology and environmental science. at a community college. I actually studied sharks in graduate school. I use your videos all the time. You should do one about different eco-friendly alternatives to burial

[@lysergikdubz2364]

Honestly you guys still have one of the best youtube intro jingles of all-time in my opinion. Short, satisfying, and far from cheesy. Great episode too. I love animals! :D

[@saumyashah7978]

The aggression can mako break a shark.

[@kari7403]

Yup. The *thresher* of being different can really get to some sharks.

[@elaineb7065]

Stripe me blue!!!

[@stephencook7337]

Lame

[@rooseveltbrentwood9654]

Stephen Cook you sir may be a shark because you are lacking a funnybone.

[@stephencook7337]

Roosevelt Brentwood 🤦🏾‍♂️😱

[@BrainSlamAnimatedScience]

waiting 150 years for the first date :P what if they take it slow?

[@lukasnovella9001]

SciTech_387 finally, another person who isn’t judging me for being 99999999 years old and without a girlfriend

[@hippiechick3210]

😂😂😂

[@vivalanova555]

Wait, so this shark isn’t legal til age 150? Oh no

[@wz1116]

Shark loli

[@ANTSEMUT1]

@@wz1116 it's not like i like you or anything...Baka!!!

[@DavidDatura]

About half the shark species described in this video, I’d never heard of before...very interesting and educational.

[@evaristegalois6282]

0:14 Level 1 : Big shark Level 35 : Bigger shark Level 100 : God help save me _That’s how shark sizes work_ - Muscle Hank

[@theeel8981]

(Music plays)

[@SuviTuuliAllan]

Level 9000: Baby Shark

[@TheSpearkan]

Where is Muscle Hank anyway?

[@Bacopa68]

The most powerful shark is the one allowed to share in Shaggy's power. "Hewoo, I am faced with a Shaggy aligned shawk." Then Perish.

[@andy56duky]

@@TheSpearkan dead. Too bad he had a great time in the comments.

[@basmca1]

That feel when 125 years old would still be jailbait.

[@srpenguinbr]

Imagine spending 100+ years as a child/teen

[@evanismybro]

SHARKBAIT HOOO HAHAA

[@humblesoldier5474]

So, most centuries to decades old Loli's in anime now a days to justify the Loli character hitting on the teen, 20 something, 30 something human year old MC.

[@parallel4]

Even 150 years is still jailbait, since humans don't become legal as soon as they're sexually mature. Girls usually start their periods at around 11 years old, and become legal at 16 (if you're over 18 or you live in America, that's 18). Since most people use 18 as the age, that gives a ratio of 11:18. 11 is prime so we can't simplify that. 150/11*18= 245.45, so basically, until she's 245.45 years old, she's still jailbait.

[@basmca1]

@@parallel4 it was a joke haha, but thanks for doing the math. Is the legal age for consent 18 in the US? That's bad. For us it's 16 and i think all the countries nearby are 16 and 14. 18 doesn't make much sense though, more people start when they are around 16 years old.

[@mr.t9023]

Number 1 *Loan sharks*

[@jacobsocia3966]

Mr. T 👌

[@akumaking1]

Lawyers

[@Cordeneaux87]

Fun fact from a former aquarist. The Spotted Wobbegong can strike faster than the average human reaction time. If you get too close, they will literally bite you before you realize it. Also the tassels on their face help to break up their outline within coral structures, which is how most animals identify things (we notice patterns).

[@susanrobinson910]

This was an awesome video, Hank! I love learning about sharks, and I was amazed when you talked about the Wobbegongs, having never heard of them/seen them before! Thanks for the new knowledge!

[@GiladGur]

This time Hank was even funnier and more entertaining than always. Very well done and thanks....

[@mammy188]

I am so grateful that all the sharks on this list (except for the Wobbegong) live deep enough in the ocean that we don't need to worry about ever meeting them while swimming IRL.

[@RangerRuby]

Hank, I have the exact same "Shark-Scale" It goes, cute, big, bigger, and LORD SAVE ME!

[@TommoCarroll]

haha, it's a universally understood scale to be fair!

[@ostmen_draugr]

Big, bigger, & "what a beauty, wooohoooo"

[@maulwurf9414]

AFishBicycle wut

[@dolomedestenebrosus9564]

So awesome. I love these animal showcase episodes. I always go look up the ones that are strange and new to me after the video. Thanks for giving me fun stuff to look up, scishow!

[@maddpoet007]

I find Sharks fascinating! The Wobbegonge looks like a plant. I'd like to see it in action,feeding. The Catshark is awesome!

[@crayzeape2230]

Swim, surf, or dive in Australia and you might find yourself a little close the the Wobbegong action :) www.watoday.com.au/national/western-australia/girl-suffers-deep-cuts-after-carpet-shark-bite-at-north-cottesloe-20190115-p50reo.html www.dailytelegraph.com.au/news/nsw/shark-attack-victim-kirrabella-olsson-13-laughed-after-ankle-and-calf-were-mauled-by-a-wobbegong/news-story/e0eb129fb750e147ba66fbf3734c47ea Certainly no shortage of Wobbegong attacks www.google.com.au/search?q=Wobbegong+bite+attack&oq=Wobbegong+bite+attack

[@theurbanshark1052]

I see wobbegongs nearly every time I go diving. They mostly are sleeping as it's daytime but I have seen them swimming around. I saw one eating an octopus it had killed once but I didn't see the attack. They do bite people a lot but it's mainly when people step on them or when someone sees their tales sticking out from under a rock and tugs on it (stupid thing to do as they are flexible enough to bite their own tails). It's rarely unprovoked when they attack.

[@crayzeape2230]

@@theurbanshark1052 I agree, most 'attacks' are generally a response to accidental (or intentional) provocation. Sometimes though, it doesn't take much to earn a bite on the butt. kzbin.info/www/bejne/Y3mXdWqDgKehiNU

[@theurbanshark1052]

@@crayzeape2230 that is true they can be nasty sometimes.

[@kengihepworth5761]

Over the Xmas break, I caught and released, 5 different types of shark. Smooth hammerhead, school shark, gummy shark, banjo shark, and a leopard shark. It was good to see lots of different species, I practice enviro tackle use, brass not lead, and hooks that oxidize in less than 12 hrs.

[@patriciarussell8450]

Love watching and learning. Thanks Hank you rock!

[@raulquintero3490]

Goblin Slayer: Where do I find this goblin shark

[@Wildeye13]

Don't bother. They're so rare, that filmed new encounters with living specimens are almost considered gold by people who studied them.

[@kinga6347]

Goblin shark : *exists* **Goblin slayer would like to know your location**

[@TommoCarroll]

@@kinga6347 "Goblin Slayer entered the chat"

[@halogen5580]

Shark biologist: *oh no*

[@eggroll3055]

Muscle Hank has a few.

[@ostmen_draugr]

My scale is the same as Steve Erwin's. Big, bigger , & "what a beauty! Woohoo!

[@arthas640]

I have a feeling he'd say "she's a beaut!" while swimming with a megaladon.

[@Excellsion]

Like... all the recommended videos are baby shark related... because of course.

[@Statsy10]

Yeah, what’s up with that?

[@naichou8403]

Yeah.... I first thought my KZbin broke somehow. Anybody know answer to this?

[@Psilomuscimol]

I'm recommended more sci show videos

[@TheReZisTLust]

Do do do dodo

[@karlinchina]

There was a guy who was criticized for posting a video of him smoking weed from a bong that was made from a shark skull to the song Baby Shark. So, it's bad that he had killed an endangered species. But the fact that he made a bong from its skull and played baby shark in the video shows...something else...bad.

[@eden9036]

Greenland shark do do do do do do Long tailed shark do do do do do do Point faced shark do do do do do do Damn weird sharks

[@moch.farisdzulfiqar6123]

Wobbegong do do do do do do 🎶

[@elaineb7065]

@@moch.farisdzulfiqar6123 Frilly Eel dodododododo glowing cat dodododododo wacky sharks

[@jesusjoseph1899]

Goblin shark do do do do do do

[@rohumhossain7992]

meggaladon do do do do do do Tiger shark do do do do do do

[@danielletanguay7272]

Evi - lmao!

[@wertywerty6]

Well done Sci Show team, that video was especially interesting and funny!

[@gamingtrexoragami501st]

teacher: why are you laughing? me: nothing my brain: WOBBEGONG-KENOBI

[@thewhovianhippo7103]

Dose not make sense *your a bold one*

[@Koolboy996]

Goblin shark: exists Goblin slayer: excuse me wtf

[@solobro475]

I’ve been watching your videos since you first started. It’s crazy to think about how much everything’s changed. Yet your videos bring back that worry free feel.

[@RavenIsAnArtist]

Mcdonalds lady: What size fry would you like? Me: *God help save me*

[@Jbrowni3]

Cool! This video came out on my birthday, which was a trip to the aquarium, and I got to actually see sharks in real life for the first time this day.

[@eyetooth]

me, at all these good sharks: adorable, what cute weirdos, I love these friends

[@christophelesmacgillicutty9677]

Other notable sharks: cookie cutter, shovelhead, loan shark and Hyundai Tiburon

[@RiggingDoctor]

Threshers were my favorite shark when I was a kid!

[@kari7403]

Me too. They were my favorite animal. I did a report on them as my favorite animal in like 4th grade.

[@jonathanbalagtas848]

I love how he explained everything. 😂 I laughed so hard. 😂

[@XxTreyvonxX]

ive seen so much animal planet and youtube videos on animals, and i'm still often amazed at some creatures still alive today that ive never seen. The ocean is amazing.

[@enzofudo7872]

just keep swimming just keep swimming just keep swimming

[@Artois2011]

"That's what we do, we swim!!" 😃

[@Rakshasa1986]

All this time I assumed tail whip was a crappy move.

[@Mindwipe96]

Before watching I hope one of my favorites the thresher shark is in this list. Edit: Wow it was the second one, letz go!

[@HTPCYMC]

Number 1: The Sharknado

[@iothefrog]

you didn't even watch the video smh

[@afrog2666]

Nad-Nado

[@cheezuschrist1102]

I will always respond to your comment

[@I_am_a_cat_]

The most realistic shark movie ever made

[@jacklandismusic]

Don’t even, dude.

[@travisgartside409]

I think it is amazing animals like the thresher shark somehow naturally know to use their tail as a whip for hunting.... I mean, other sharks dont do this, they are not raised by caring parents that teach them. Yet- they just know! I think that's very cool!

[@FireboltPrime]

KZbin recommendations: baby shark, toys, etc Me: KZbin ya done goofed... again

[@RussellRoefer]

Great episode! Hollywood makes some fun stuff, but nature has so many more interesting things for us all to find. Loving the show. Keep up the great work.

[@clockworkcthulhu8195]

new idea to movie the Sawshark Redemption.

[@haleighferland6577]

You should’ve mentioned epaulette sharks, they can walk on land! They’re extremely dangerous if you happen to be a small tidal pool crab, but pretty harmless if you’re human-sized 😁

[@SerathDarklands]

Most kids love dinosaurs when they're little. I was fascinated by sharks. And the thresher shark was always my favorite.

[@silverharloe]

Every single "up next" recommendation from KZbin for me is a variation of the "baby shark" song.

[@TheTenthBlueJay]

Same

[@chromedog68]

The wobbegong is also one of the few sharks that can bite its own tail (so don't try to grab one). It also locks its jaw when it does bite down, essentially ratcheting closed (it's a shellfish eater for the most part, and this mechanic helps crush the shells) - the jaw only relaxes once it has crushed its prey.

[@johnnybadboy3475]

I knew about these sharks already, but your insight was fascinating!

[@13thMaiden]

What?! No cookie-cutter shark?! OUTRAGE!!

[@jelfishery]

I love how every time he makes a funny joke, cuts.

[@deathball2331]

8:31, how the hell does blue light, one of the most easily attenuated wavelengths of visible light, make it deep into the ocean? Shouldn’t it be red?

[@kari7403]

Hank saying "sneaking up on its prey. Extra super creepy!" Is why I love Hank. X-D

[@TheOGPlatypus]

Clicked on the video cause I saw what looked like the Greenland shark, still one of my favorite sharks ever

[@WiredTurkey316]

In 10 minutes you covered more cool shark stuff than other channels do in a week. Nice.

[@coffee115]

You know what is really funny? Sharks with human teeth.

[@zebedeesummers4413]

Maybe we have their teeth?

[@itswarhawk]

And the teen sharks had braces

[@thewhovianhippo7103]

Homodon should be it's name = human teeth

[@sirensbane17]

A great mix of humorous and educational.

[@stilles342]

I am concerned about youtubes video recommendations....It gives me kid cartoons to look after this one?!

[@JustSimplyBrandon]

So much better watching this than the Super Bowl!

[@dumbt]

dude, this guy and his brother are amazing

[@kiwibuddy5341]

Me: Why did I like Scishow in particular...? “Big, Bigger And.. gahhelpsaveme” Me: More please

[@channelname10yearsago68]

3:54 for reference The top view of the shark looks like an old man who saw a kid but the kid was doing something he hate.

[@darkling6]

this guy is the best host on SciShow

[@postmortemspasm]

Do one on sail fish and how they hunt! its very interesting

[@blueRAYE13]

SHARKS! Love sharks. They're such cool lil dudes

[@semelo5075]

Ya I like sharks too

[@cassidyguarino1831]

Lil???? Lol.... Great White: am I a joke to you???

[@QaRajhCreations]

Part of the Greenland shark's age also comes from the fact that it doesn't really "hunt", instead it's more of a vulture, feeding on carcasses hat drift towards the sea floor. The shark also doesn't really rely on it's eyesight, but obviously, like other sharks have a strong sense of smell.

[@colinp2238]

Just love that name wobbegong!

[@CoughE]

Who would win? Me enjoying myself at the sea or One Fierce Boi

[@k1dicarus]

Most sharks are as dangerous as a cow. If you play stupid with it, its like "How about no"

[@luccaogushi8397]

Heck yea, scishow uploaded!

[@ShhMarcIsHere]

goddamn 1 minute in and Hank already going in on my homie greenland shark SHEEEEEESH

[@smergthedargon8974]

1:03 Hank Green confirmed for scalie.

[@connorcriswell7171]

Sharks are literally just amazing tbh

[@ilyaelric9539]

Maan were is cookiecutter shark. It's weird enough to be on this list.

[@shadowlynx1958]

(mom voice) Learn to fold your proteins properly! (stern look)

[@AlthenaLuna]

A little surprised you didn't borrow Brit from the other Complexly projects she does to host something about sharks.

[@artiefufkin88]

I'm sure this has been said, but Goblin Sharks don't swim around with their jaw extended, looking like that. That's just when it's dead, or for a moment when predating something. They look much more graceful and "normal" in their own environment. Truly an awesome creature to be admired and respected :)

[@ohno4458]

*NOM NOM*

[@stevecannon-english8683]

Saw another interesting video about the Greenland Shark. It seems that they have no problem eating Humans as well. really scary. They were found in an inlet in Canada and they are very threatening critters.

[@Taikamuna]

Weirdest shark is baby shark

[@AlphaCenturi16]

Taikamuna obviously the wobbegong

[@snakehandler87]

Thresher sharks been my favorite since I was a kid

[@rafsan1578]

Sharks are like cats of the ocen, both hunt their prey, both are so diverse, became divided into so many different species.

[@johnilyemson]

Sharks are my favorite. I love this informative video.

[@pattifeit4354]

That first scene, where the shark looks like it's stalking Hank ... lmao!

[@Adamjen]

Wow, that Indiana Jones shark really cranked my gears! Cool!

[@donjuanguest3697]

Hank is the best

[@nathankeel4308]

My favorite skarks are Cookie Cutter Sharks. They bite circular holes out of submarines.

[@hermanschultzfurry]

“hey bbg, wanna hangout?” “IM ONLY 120 YRS CREEP”

[@doha057]

What kind of people dislikes these videos I wonder!!!

[@AlphaCenturi16]

Ashik Doha shark food

[@ShandiCandy]

"Happy swimming everyone" lmao

[@purplepanda5773]

Hank for President!

[@spongebobsquarepants1411]

Doo doo doo doo baby shark

[@nerdfighter2004]

No stop! Cringey af

[@berndwolff2389]

Guess what the recommended videos are that KZbin shows me right now 😨

[@frankteng]

Bernd Wolff oh god no why did I check too

[@AJDaBaws]

Get out

[@kari7403]

Lmao! I was hoping someone would post something like that. Hahaha

[@HamaScarlocke]

Honestly I think they’re all pretty cute in their own ways, like the goblin is cute to me in a kind of sad ‘please love me’ sort of way. And I just wanna give all these cuties a kiss on their sweet little heads, especially the Greenland and the cat shark. Weird of me, perhaps, but I tend to find the weirder looking creatures out there to be just as cute as puppies and kittens. Probably why I baby talk to my tarantula like he’s some eight-legged cat