Ever wonder why sharks have so many differently shaped teeth or why they keep regrowing throughout their lives? Dr. David ...

One of the reasons sharks have been so successful is that they have exploited different ecosystems and eaten different types of foods. And because they’re eating different foods, they need different ...

The marks match a trace fossil type known as Knethichnus parallelum, a pattern of parallel grooves made when serrated shark teeth scraped across a surface. These scars on Megalodon teeth suggest ...

Sand tiger sharks, also known as gray nurse sharks, have a deceivingly ferocious look. They are large-bodied and display a mouthful of sharp teeth that protrude in all directions, even when the ...

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 ...