The finned octopus lived alongside T. rex and may have been one of the top predators in the ancient ocean food chain.

A new species of flapjack octopus, with massive eyes and blood-red tentacles, has been discovered from a deep-sea canyon off the coast of Australia. The new species has been named Opisthoteuthis ...

Add Yahoo as a preferred source to see more of our stories on Google. A mother octopus broods her eggs near a small outcrop of rock unofficially called El Dorado Hill. When a female octopus broods ...

Some octopuses that lived over 72 million years ago were as long as whales. These huge predators may have been the largest invertebrates ever.

Can you imagine spending your entire life without ever touching the floor? Well, that’s the reality for this octopus. Pelagic ...

Add Yahoo as a preferred source to see more of our stories on Google. This octopus survives in plain sight. Here’s how it adapts its body in real time to mirror dangerous species and navigate one of ...

Deep-sea creatures often look more like science fiction monsters than marine animals. The glass octopus is one such animal. The Schmidt Ocean Institute captured this footage of the incredibly rare ...

A new species of octopus may have just been discovered off the coast of Costa Rica. It was found in a rare brooding site that marks only the third octopus nursery known to exist in the world. The ...

Scientists have discovered at least four new species of octopus in the deep waters of a 100-square-mile area near Costa Rica, officials from the Schmidt Ocean Institute said on Tuesday. An ...

Unlike most of its invertebrate peers, octopuses gave up protective shells... But it seems that the sacrifice was totally worth it.