This is delightful—an octopus rips a video camera out of a diver’s hands, flees (while the camera is still recording), and then gives the camera back: The video is a much-less-disturbing version of ...

The blue-ringed octopus may be small enough to fit in the palm of your hand, but its venom is among the deadliest biological weapons found anywhere in the animal kingdom. Armed with a neurotoxin ...

A tiny octopus may look harmless, but the footage reveals rapid strikes and tight grappling with live prey. Close underwater shots capture the exact moment its arms wrap around a crab and pull it ...