Giant, fearsome octopuses may have once ruled the ancient seas, according to new research that flips the script on their ...

(Rui Palma/iStock/Getty Images Plus) Long before Megalodon ruled the seas, something just as unsettling may have lurked in ...

Below the waves, giant marine reptiles, such as the fearsome 4m (13ft) long mosasaurs, were the undisputed apex predators. In artistic reconstructions of these ancient oceans, cephalopods – the animal ...

Being bitten by a strange animal can be extremely scary, especially since so many species use venom against their prey. One such animal is the blue-ringed octopus. While octopus venom is not typically ...