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

A rendering of Clavusodens mcginnisi, or “McGinnis’ nail tooth,” an ancient shark that stalked the ocean floor 340 million years ago. Rendering courtesy of the National Park Service A shark ...

The US National Park Service announced the identification of a new species of ancient shark, Clavusodens mcginnisi, ...

This “chipmunk shark” packed quite a punch with its strange set of teeth ... for these types of discoveries, Toomey said. “We’ve ended up finding at least 70 different kinds of shark ...

Researchers in New Zealand found that a small species of shark makes noises with their teeth when touched by humans Charlotte Phillipp is a Weekend Writer-Reporter at PEOPLE. She has been working ...

A small international team of marine biologists has observed the first known instance of a shark intentionally making sounds.