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 ...

Add Yahoo as a preferred source to see more of our stories on Google. The biggest, most formidable shark to have ever roamed the ocean may have been even larger than previously thought, according to a ...

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

Megalodons were massive predators that ruled the world's oceans. Hugo Saláis via Wikimedia Commons under CC BY 4.0 For nearly 20 million years, megalodons prowled the world’s oceans. The massive ...

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History is full of terrifying beasts that would make even the most ferocious living predators look like cuddly toys. There's the largest prehistoric arthropod, as well as the the giant eagle that ...

Shark biologists now say a lemon shark, like this one, is a better model of the extinct megalodon's body than the great white shark. The megalodon has long been imagined as an enormous great white ...

Forbes contributors publish independent expert analyses and insights. I write about biodiversity and the hidden quirks of the natural world. The ocean’s ultimate predator once hunted whales with ease.

Maryland lawmakers voted to designate the massive, prehistoric megalodon as the state's official shark. The passed legislation makes Maryland the first state to name an official shark.