Illustration of the giant shark Carcharocles megalodon, which died along with other large marine species during a newly identified extinction event. | Mary Parrish, Smithsonian, National Museum of Natural History

A Massive Marine Extinction in Earth's History Was Just Discovered

Nearly a third of the world's largest ocean species may have died during what researchers are calling the Pliocene marine megafauna extinction.

Published On 06/26/2017
11:00 AM EDT
T T he largest known shark that ever lived, Carcharocles megalodon, ruled the seas for over 20 million years. The enormous toothy predator, which could grow to about 60 feet long, seemed indestructible. Even now, the shark’s status is so legendary that — like a powerful celebrity — only one word is sufficient to name it: megalodon.