Shark encounters are both amazing and terrifying. Getting close to these sharp-toothed animals is a perfect activity for ...

Florida was once part of a prehistoric, warm, shallow sea filled with sharks. Fast forward to today, and their prehistoric teeth can be found along Venice’s beaches, leading the town to herald itself ...

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.

STANFORD, Calif. (KGO) -- If you ever come face-to-face with the wrong kind of shark, there's something you probably want to avoid. Just a hint: they're long and really sharp. But now, researchers at ...

Even sharks’ famous tooth-regrowing ability may not save them from ocean acidification. Researchers found that future acidic waters cause shark teeth to corrode, crack, and weaken, threatening their ...

Shark skin is specially designed for a life lived on the move. Its surprisingly spiny texture has even given designers ideas ...

Could new populations of seals and porpoises attract the descendants of some of the large shark species that were thriving in ...