Then there were killer sperm whales, a now-extinct type of sperm whale. They grew as large as megalodon and had even bigger ...

Megalodon’s favorite prey – small whales – vanished and it had to compete with other hunters such as the predatory sperm whale Livyatan and modern great white sharks. By 3.6 million years ...

The Megalodon may have been the top predator in its time, but it had fierce competition in the form of Livyatan melvillei, a massive prehistoric sperm whale. This whale was no gentle giant – it ...

A sperm whale stranded on Cuttyhunk Island over the weekend, adding to alarming whale death toll since December. Here's what ...

it's closer in length to a modern sperm whale. Its stomach may have held 10,000 litres, that's enough for it to have eaten 20 whole cows...if cows swam in the sea. How big are the megalodon's ...

Estimates suggest megalodon actually grew to between 15 and 18 metres in length, three times longer than the largest recorded great white shark. It may have been comparable in length to today's ...

The sperm whale on Cuttyhunk Island was a female measuring 32 feet long and weighing about 11 tons, Hedman said.

Apparently these deadly predators were the reason why whales were much smaller millions of years ago. Few fish are as steeped in myth and conjecture as the megalodon, a giant shark that lived ...

The megalodon, great white shark and mako shark are not the only warm-blooded marine animals. Others include aquatic mammals such as whales, dolphins, seals, sea lions, walruses and manatees.

Estimates suggest megalodon actually grew to between 15 and 18 metres in length, three times longer than the largest recorded great white shark. It may have been comparable in length to today's ...