The blue-ring octopus is only about eight inches with its tentacles extended. It prefers shallow water Australia and often lives under piers. It avoids . But if it must defend itself, this creature deliver a bite that is fatal. The toxin the bite can paralyze most of the muscles a human. A human might die in less five minutes.

The blue-ring octopus gets its name bright blue circles that can appear all over body and tentacles. These rings are nearly invisible the animal is at rest. The rings glow the octopus is alarmed. The glowing blue color others to stay away.

The blue-ring octopus likes sneak up on its favorite food—crabs. The crabs sometimes as big as the octopus. But the is often able to “hug” the crab tightly its eight tentacles. As soon as the octopus a good grip, it injects its toxin into crab’s body. Sometimes it will inject its toxin into the crab’s eye. The toxin kills the quickly.

Like some other males in the animal , the male blue-ring octopus dies shortly after mating. female guards the eggs for about two months they hatch. After that, she waits until another comes along.