The blue-ringed octopus is the only octopus to have a lethal toxin that can kill humans. Read here to learn about potential ...

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 ...

Underwater metal detecting often looks calm, controlled, and safe. But hidden among rocks and shells are some of the most venomous creatures on the planet, including the blue-ringed octopus. In one ...

The blue-ringed octopus shows bright patterns on the seabed in Australian waters, Australia. Its appearance is striking but signals danger. This contrast makes it fascinating and risky.