Fifteen million years ago, now-extinct species of dolphins, whales and large sea cows roamed the world’s oceans, topping the underwater food chain. Yet back then, any one of these creatures could ...

Megalodons—the iconic extinct sharks that dominated the ocean millions of years ago—have been portrayed in Hollywood blockbusters and sci-fi novels as oversize great white sharks. But new research ...

A shark so rare it was once thought to be extinct was just spotted off the Welsh coast. The Wildlife Trust of Wales captured footage of the angel shark in Cardigan Bay, the first documented sighting ...