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 ...

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, ...

The biggest, most formidable shark to have ever roamed the ocean may have been even larger than previously thought, according to a new study. The research, published Sunday in the journal ...

A new study has uncovered surprising insights into the feeding habits of the largest predatory fish to ever roam the Earth's oceans, challenging long-standing assumptions about the prehistoric ...

The Meg was shaped more like a whale than the giant great white shark in the Jason Statham movies, suggests new research. Megalodon, the prehistoric ocean hunter, was a "longer, sleeker super predator ...

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

Would you ever venture into the ocean if you knew this creature could be lurking beneath you? It's twice the size of a T. rex, its jaws are big enough to crush cars, and it can swallow multiple humans ...

Contrary to widespread assumptions, the largest shark that ever lived -- Otodus megalodon -- fed on marine creatures at various levels of the food pyramid and not just the top. Scientists analyzed the ...

Everyone's favorite prehistoric shark may have been much sleeker and much larger than previously thought. A new study suggests that the megalodon wasn't as stocky as the great white shark, and that it ...

Otodus megalodon was the largest predatory fish in Earth's history. Measuring up to 24 meters, it was longer than a truck with a trailer and weighed almost twice as much. Embedded in its jaws were ...