Add Yahoo as a preferred source to see more of our stories on Google. The megalodon is a prehistoric ancestor of the modern-day shark, and just like it preceded the shark, National Megalodon Day ...

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 ...

Great white sharks are already massive, but scientists use their teeth to estimate just how big they can get—and those same methods help unlock the mystery of the megalodon, the colossal predator that ...

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

As one of the largest predators to have ever lived, megalodon captures people’s imagination – and for good reason. But was this apex predator simply a beefed-up great white shark, and is it still ...

Fifty years after Jaws hit theaters, and there’s still a lot we don’t know about sharks, which lends to their reputation as mysterious predators. There’s even more we don’t know about ancient sharks, ...

(CNN) — Paleobiologist Dr. Kenshu Shimada has been fascinated by fossil sharks, including the giant Otodus megalodon, since childhood — he found his first megalodon tooth at 13 years old. So when he ...