(Close-up of a shark with sharp teeth. Credit: GIOVANNI NITTI / Shutterstock.) Shark teeth are a marvel of evolution. They are so sharp that many island cultures once used them as weapons and tools to ...

Photographs (left) showing the extinct right whale partial skull with shark bite marks highlighted in red. The more complete ...

Editor’s note: Every year, hundreds of undergraduates at the University of Delaware pursue research under the guidance of a faculty mentor. Such experiences provided by UD — a nationally recognized ...

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 no larger ...

A broken tooth lodged deep in bone can outlast the animal that lost it. In two whale skulls from Belgium, those fragments ...

A routine dive off the coast of Manasota Key has turned into something far more unusual. What began as a guided ...

A new study analyzing two fossilized whale skulls from around 5 million years ago has revealed fragments of sharks' teeth ...

STANFORD, Calif. (KGO) -- If you ever come face-to-face with the wrong kind of shark, there's something you probably want to avoid. Just a hint: they're long and really sharp. But now, researchers at ...

For a shark that vanishes almost as quickly as it appears, the great white has left behind a surprisingly messy family ...

The fearsome teeth that define sharks as the ocean's apex predators, and are crucial for their survival, are now under threat from changing marine chemistry. A new study suggests that increasing ocean ...

Some sharks are defined by more than just their size—their teeth are what truly set them apart. From razor-sharp rows built ...

Gasparilla Island State Park near Boca Grande, Florida offers pristine white beaches, fossil shark teeth hunting, historic lighthouses, and peaceful walks beneath massive banyan trees.