Study of fossilised beaks shows patterns of wear and suggests some ancient species were up to 19 metres long ...

Lurking in the ocean's twilight zone - an area between 650 and 3,000 feet below the surface where light rarely reaches - is the seven-arm octopus (Haliphron atlanticus). Also known as the septopus, ...

The 19-metre-long Nanaimoteuthis haggarti was a fearsome carnivore eating fish, crustaceans and many other sea creatures.

The giant kraken, a mythical marine beast, may not be entirely fiction. New evidence suggests that octopuses up to 62 feet ...

This octopus survives in plain sight. Here’s how it adapts its body in real time to mirror dangerous species and navigate one ...