The blue ring octopus is a small animal with a lethal secret. Though small, this poisonous creature carries a powerful toxin ...

A blue-ringed octopus is one of the most dangerous animals in the ocean. Its bite can be fatal to humans. However, very few people have died from a blue-ringed octopus bite. These octopuses are not ...

Blue-ringed octopi are some of the deadliest marine life in the ocean, though they rarely bite humans. There are several species of blue-ringed octopus, part of a genus known as Hapalochlaena. They ...

With a split-second muscle contraction, the greater blue-ringed octopus can change the size and color of the namesake patterns on its skin for purposes of deception, camouflage and signaling.