The most dangerous sea creatures in the world don ... eye on weather reports before swimming Down Under. The blue-ringed octopus is yellow with blue rings that glow like a warning light when ...

But their adorably small size and Instagrammable appearance is deceptive: blue-ringed octopuses are some of the ocean's most toxic animals. Blue-ringed octopuses are a group ... There may be around 10 ...

Another unusual aspect of the blanket octopus: It’s immune to the stinging cells of the highly dangerous (to humans at least) jellyfish, the Portuguese man-of-war, which it uses to its advantage ...