An Octopus cyanea hunts with a blacktip grouper on one side and a blue goatfish on the other. Octopuses don’t always hunt alone — but their partners aren’t who you’d expect. A new study shows that ...

How does an animal with no bones (like an octopus) move? Animals without bones are known as invertebrates. The vast majority of animals are invertebrates. Invertebrates typically have fluid-filled ...

While pigs are not yet flying, coconuts are walking and clumps of algae are tiptoeing — sort of. The coconuts and clumps of algae are really octopuses walking on two arms and using their six ...

Unprecedented numbers of the common octopus have been found in British waters this year, but what’s behind the rare ‘bloom’?

When a blanket octopus swims, it creates a kaleidoscope of colors twirling underwater. It’s a rainbow of beauty as it glides through the sea. It’s gorgeous, and it’s almost never seen by humans in ...

Aristotle didn’t have a high opinion of the octopus. “The octopus is a stupid creature,” he wrote, “for it will approach a man’s hand if it be lowered in the water.” Twenty-four centuries later, this ...