and get their name from the cube-like shape of their bell.
Up to 15 tentacles grow from each corner of the bell. The tentacles can be 3 meters long. They sting with their tentacles !!!
They can cause human death in less than 3 min. If you do not get the anti-venom within the first thirty minutes after they sting there is a 90% chance you’ll die.
They are the only Jellyfish that have brain. They can recognize food and predators (Butterfish, Batfish, Crabs, Sea Turtles) .
They are the only Jellyfish that sleep. They sleep on the ocean floor.
Sea turtles are unaffected by the sting of the box jellyfish and regularly eat them. UNFORTUNATELY………….
Girl survives sting by world's deadliest jellyfish - Bonnie Malkin in Sydney (Telegraph.co.uk) A 10-year-old schoolgirl, Rachael Shardlow, has stunned doctors in Australia after she survived being stung extensively by the world's most venomous creature – the box jellyfish.