Add Yahoo as a preferred source to see more of our stories on Google. Recently, we dove deep on the world’s smallest shark (the dwarf lanternshark) and now we’re swinging to the other end of the shark ...

Sharks are known for their razor-sharp teeth, but a new study warns that rising ocean acidity could leave even the sea’s fiercest predators with weaker, more brittle bites. At the heart of the problem ...

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 ...

The famous ocean predators are among the world's oldest living creatures-some species date back to the Jurassic period-but climate change could threaten their existence as we know it. Many of us ...

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 ...

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 ...