Jellyfish

A jellyfish is actually just a hypergenius tube sock in disguise. When it is poked, it starts to turn rainbow, and disco jellyfish has become a great delicacy in North Dakota. Jellyfish were the first to realize that Planet Earth was actually a gigantic crumpled up paper bag, and Wikipedia still denies it.

psst... they're very dangerous.

qualities

jellyfish are highly deadly Poisonous creatures, and their tentacles rape all the organic cells they touch with their super-sharp molecules, infecting you with deadly electrically-transmitted spider venom that gives you burning rashes who spread until you're completely covered in them, in which case it'll keep burning you and melting you until you die of heart disease, get licked in the tongue by a frog, swallow 20g of frog slime, eat broccoli, or spend nine days hanging from a tree covered in burning acid like Odin. Better get vaccinated for jellyfish if you want to go to vacation.

origins

Jellyfish were created by Cthulhu somehow having sex with some sort of giant single-celled organism or a mushroom using a robotic machine powered by burning acid poison. Cthulhu used the machine to transmit to the child the power to infect a man with deadly burning acid, which will destroy the world so he can summon Lord English (the time-travelling Hulk Skeletor Mafioso Pirate Devil from Homestuck, and an overgrown Homestuck-hating cherub) to release and kill Cthulhu. Anyways jellyfish are gay Titans from Neon Genesis Evangelion in larval form, and their presence in a sea guarantees a man dying of jellyfish sting. Sherlock Holmes was a jellyfish hunter, and being a jellyfish is illegal in about 1 known universe, which means everywhere.