Few animals pack as much danger into as small a body as the blue-ringed octopus, a cephalopod that rarely grows longer than a ...

This small, cute looking creature is one of the most dangerous animals in the ocean. It hides on shallow reefs, blending into its surroundings. While snorkeling or walking near the shore, you might ...

This unassuming octopus pairs bacterial chemistry with evolutionary efficiency to deliver one of the most powerful defenses in all of the ocean. The blue-ringed octopus (genus Hapalochlaena) is small ...

Add Yahoo as a preferred source to see more of our stories on Google. An Australian diver witnessed "something incredible" when she encountered a southern blue-ringed octopus camouflaging itself in ...