Megalodon teeth are the largest shark teeth ever found and have sharp serrated edges. So when these sharks bit marine mammals ...

But was this apex predator simply a beefed-up great white shark ... teeth show that their diets overlapped. 'No. It's definitely not alive in the deep oceans, despite what the Discovery Channel has ...

Sharks don’t have bones. Their skeletons are made of cartilage - the same soft, flexible stuff as your ears and the tip of your nose are made of ... a shark's skeleton not made of cartilage is their ...