Scientists have discovered that the long-extinct megalodon, also known as the megatooth shark, had a body temperature ... the megalodon likely needed to eat a lot of prey.

Emma explains, 'With its large serrated teeth megalodon would have eaten meat - most likely whales and large fish, and probably other sharks. If you are that big you need to eat a lot of food, so ...

Watch the video above to see how big the megalodon's tooth compares to that of a great white shark. You can also see how big it is in the photo below! Which has a stronger bite? A T-Rex or the ...

but is significantly warmer than most sharks. Its warmer operating temperature may be what allowed Otodus megalodon to grow so huge, dominant and terrifying. The researchers write that its warmer ...