(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 ...

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.

A shark's teeth give it the power to rule the seas, yet these ferocious chompers aren't built to last in acidic water. As oceans grow more acidic due to climate change, sharks may be left with ...

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 ...

This unique Florida park offers a rare hands on experience, letting visitors hunt for ancient shark teeth while exploring ...