Fossil teeth of extinct megalodon sharks have grooves made by other megalodon teeth, hinting at violent encounters between ...

A scary-looking creature with “devil” in its name was spotted close to the surface off Tenerife, a Spanish island.

Goldfish crackers are a popular snack, but could they be destroying your kid's teeth? A group of experts say yes. Here's how.

This is only the second time the species has been recorded while alive. “I thought it was A.I.,” says fish biologist Kory Evans.