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 ...

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 ...

Some 115 million years ago, a veritable fleet of giant predators prowled the waters near Australia. There were long-necked plesiosaurs, snaggletoothed pliosaurs with massive heads, dolphinlike ...

As the Earth shifts to climates not seen for several hundred thousand years, we may need to look at ancient environments for clues about what could happen next. Our new study of two whale fossils, ...