Octopuses have gotten a reputation for being cunning camouflagers and intelligent creatures. But some are known for a more ominous reason: They're deadly. One group — the blue-ringed octopus (genus ...

A diver has captured a dramatic video of a crab squaring up to an octopus on the seabed in Australia. The video sees the blue-ringed octopus crawling along the seabed before encountering the crab, ...

Don’t mess with the blue-ringed octopus. The golf ball-sized cephalopod, which lives in the Pacific Ocean along shallow shores, carries a neurotoxin that can kill an adult human within minutes. But ...