(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 have long been known for their razor-sharp teeth, weapons that make them some of the ocean’s most effective hunters. But new research suggests that these powerful tools may not be as invincible ...

PaleoCris and I teamed up with our friend Rick to explore a Florida creek site we rarely get to hunt. The trip paid off with colorful shark teeth, juvenile Megalodon teeth, and some incredibly rare ...

WASHINGTON — They are the ocean's most famous apex predator. But something is eating at them - acid. Rising acid levels in the world's seas will dissolve sharks' teeth - that's according to a new ...

Tom Pierce’s hands move with precision as he wraps each black shark’s tooth with wire, laying them in a row on the glass counter. The process only takes a few minutes to create each piece of jewelry, ...

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 ...

Bull sharks (Carcharhinus Leucas) are one of the ocean’s most fearsome creatures. Although some animals may prey on bull sharks, such as crocodiles, killer whales, and the occasional great white shark ...