Shark Teeth | SHARK ACADEMY

In this informative Shark Academy episode, Jonathan Bird explores the different kinds of teeth that sharks have and what they are used for.

**********************************************************************
If you like Jonathan Bird's Blue World, don't forget to subscribe!

You can buy some Blue World T-shirts & Swag!

You can join us on Facebook!

Twitter

Instagram
@blueworldtv

Web:
**********************************************************************

Why do sharks have different kinds of teeth, and why do they have so many? I'm Jonathan Bird and this is Shark Academy!

Different sharks feed on different things, and so shark teeth have evolved along with sharks. Small bottom-dwelling sharks that feed mostly on invertebrates have flattened teeth for crushing.

Sharks that feed on fish typically have pointy teeth designed to grab and hold slippery prey so it can't get away, and the prey is swallowed whole. The Mako and Sand Tiger shark have these kind of teeth.

Sharks that feed on larger animals have more saw-shaped teeth designed for taking bites out of larger prey. The white shark, Bull shark and Reef sharks have teeth like this.

The most extreme example of a cutting tooth is the fossilized tooth of the extinct Megalodon shark, kind of like a prehistoric Great White that was larger than any shark alive today, including the whale shark. The Megalodon had the biggest teeth of any shark known.

This is a set of jaws from a Bull shark and in the front you can see the active row of teeth that the shark was using, but if you look in the back, you can see, like a conveyor belt, there’s a steady supply of replacement teeth ready to go as soon as one of those front teeth would break off or fall out. So the shark had essentially an unending supply of teeth.

In this way, sharks never run out of teeth and they don't need to go to a dentist! It's estimated that some sharks go through 35,000 teeth in a lifetime!

[annaaldridge]

Really cool to see the jaw from the back!  I didn't realise the teeth were so neatly stacked up like that.  Great episode!

[blue_jai]

A little number of people watch these videos, but to the few that do, thank you for caring about sharks. The ocean wouldn't be the same place without them. And thank you, Jonathan, for making these videos. We appreciate them, and I'm sure if sharks knew about these videos, they'd appreciate them, too.

[kylehshulkpage]

This is the first video I ever watched in his channel this brings back
So many memories

[zanxn]

this is my favorite episode out of the whole playlist expect form the blue sharks

[MinecraftGamerz]

I am in love with sharks and your shark academy videos are amazing, vids more often would be better

[phyragain]

That was really cool, to see the backup teeth!

[sartanko]

Had no idea about the tooth replacement system, very interesting thanks.

[Shootingstar]

You've inspired me to be a marine biologist! Keep doing what you do💖

[cozycozes]

Awesome! Another video! ^-^ And this one is very interesting!

[ClumsyAssassins]

if only our teeth could keep replacing themselves like that.  Would save a bundle in dentist bills.

[ginagarcia]

I have real shark tooth John I love shark academy and your channel and your family

[FoxyFoxers]

Hey Jonathan you've really inspired me to research Marine Life especially Sharks, You should play a mobile game called Hungry Shark World it has some comedy mixed in.

[samrittler]

Hey Jon, You should make a series called "Fish Fails".

[kylehshulkpage]

I have a collection of all those types of shark teeth including the megalodon

[wolfancap]

I have a question that i cannot find the ansewer to and this seems like the best place to ask it.
Is it possible to make arrowheads out of shark teeth, like the great white shark?

[TimGames]

hey jonathan, could you make an academy video about mako sharks?

[missminecraft]

hi Johnothin Bird I wish I could go scuba diving with you it has been my dream since I was small and I am a fish I love to swim and yea and u are so cool :D

[thehamy]

U should do another great white shark vid or do a vid on a mako shark

[faithhanes]

Cool guys i know that it is so good thanks

[elaineb]

Again, you forgot my seatigies!!! Tiger sharks have a nhice combo of all of these in their teeth: serrated blades wi sticky-out bits pointing backwards. They can eat all sorts, even hard-shelled creatures; in fact, their jaws are powerful enough to crack the shell of a sea turtle!!! Stop forgetting my seatigies!!!