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

Some of the most dangerous creatures on the planet are not the ones with the sharpest teeth or the largest bodies. They are, in many cases, small enough to sit on a fingernail. The blue-ringed octopus ...

An Australian teen nearly died when he was bitten by a poisonous blue-ringed octopus hiding in a shell he scooped out of the ocean to show his niece. Jacob Eggington, 18, was swimming and looking for ...

A teenager in Australia nearly died from a poison octopus' bite after he pocketed a seaside souvenir. 18-year-old Jacob Ettington was hunting for shells at Shoalwater Beach, near Perth, local outlet ...

The blue-ringed octopus is small, but its venom is powerful enough to kill multiple humans in a short time. It delivers neurotoxins that can cause rapid paralysis, making it difficult or impossible to ...

Forbes contributors publish independent expert analyses and insights. I write about biodiversity and the hidden quirks of the natural world. Go diving into the intertidal waters of the Great Barrier ...

Mat Rogerson found a deadly blue-ringed octopus on his snorkeling gear in Australia, according to a Facebook post. Screengrab from Facebook Mat Rogerson regularly goes snorkeling off the coast of ...

Along the rocky shores of eastern Australia, a small brown octopus is unassuming as it blends in with its surroundings. When the octopus is scared or hungry, however, it becomes one of the most ...

When they're alarmed, blue-lined octopuses display iridescent blue rings on their arms to ward off approaching predators. Totti via Wikimedia Commons under CC BY-SA 4.0 Animals have evolved many ...