This hunt starts with an insane premise: somewhere out there could be a Megalodon tooth big enough to fetch a million dollars. That means freezing water, hours of searching, and the hope of finding ...

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

Add Yahoo as a preferred source to see more of our stories on Google. One of a blacktip reef sharks’ top teeth as seen under a scanning electron microscope. “It’s not only shells, corals, and mussels ...

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 weapons at risk.

This is read by an automated voice. Please report any issues or inconsistencies here. PORTLAND, Maine — Sharks are the most feared predators in the sea, and their survival hinges on fearsome teeth ...