Hair Jelly (Cyanea capillata)

what does this mean?  First Aid for envenomation by this species  show the distribution of this species

Hair jellyfish are widely distributed, and found 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 jellyfish, and significantly larger in the cold-water Atlantic jellyfish. 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.