Sea blubbers

The sea blubber (Cyanea capillata) is widely distributed in coastal waters throughout Australia. They have a flattened or plate-like bell and multiple delicate hairy tentacles. The bell may be 30cm across in Australian species and significantly larger in the cold-water Atlantic ones. Stinging results in severe pain that may last for up to an hour. Nausea and abdominal pain sometimes occur, as do sweating, muscle cramps and breathing difficulties. No deaths have been attributed to this creature.