Add Yahoo as a preferred source to see more of our stories on Google. A woman discovered a rare shark tooth in Florida, offering a glimpse into prehistoric times. Nichole Mercuri, 26, was walking ...

The largest predatory fish ever is the megalodon shark, and new details about its diet have now been revealed. The megalodon, which had teeth the size of humans, was named after the Greek word "big ...

There's something fascinating and terrifying about sharks that seem to lurk deep in the human subconscious. Movies like 1975's Jaws, about a monstrously oversized great white shark, tapped into the ...