Some sharks are defined by more than just their size—their teeth are what truly set them apart. From razor-sharp rows built ...
A 6-inch megalodon shark tooth was found by a Wyoming teen during a dive trip off Manasota Key, Florida earlier this week.
PORTLAND, Maine (AP) — 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 ...