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 ...

Roaming the ancient seas eons ago, the megalodon shark eviscerated its prey with jaws that were 10 feet wide. Warpaintcobra/iStock via Getty Images Plus Imagine traveling back in time and observing ...

Flinders University provides funding as a member of The Conversation AU. Imagine the seas off Peru, 6 million years ago. A group of long-nosed dolphins swam through the warm seawater, breaking the ...

Imagine heading out for a swim and knowing that a shark the size of a bus could be lurking somewhere beneath the surface. This is not the plot of a science fiction movie. It is what life might be like ...

Forbes contributors publish independent expert analyses and insights. Márquez is a marine scientist and science communicator “Our new study has solidified the idea that O. megalodon was not merely a ...

For decades, the giant prehistoric shark known ominously as “The Meg" has been portrayed as a massive apex predator that hunted the only formidable opponent in the oceans at the time: whales. But new ...

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. Paleobiologist Dr ...

This story is from The Pulse, a weekly health and science podcast. Find it on Apple Podcasts, Spotify, or wherever you get your podcasts. There’s something simultaneously glorious and terrifying about ...

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. The prehistoric ...

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 ...