It’s a sought after coastal souvenir, one that has beachgoers stooped over scanning the sand for the black, triangular shape that is the shark’s tooth. Social media is filled with Facebook groups ...

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

PORTLAND, Maine — Sharks are the most feared predators in the sea, and their survival hinges on fearsome teeth that regrow throughout their lives. But changes in the ocean's chemistry could put those ...

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