First aid for irukandji stings consists of analgesia and reassurance.

A number of related jellyfish can cause Irukandji syndrome. Carukia barnesi, however, is the jellyfish conclusively known to do so. Irukandji is a small (~2 cm diameter bell) jellyfish responsible for an unusual and dramatic syndrome observed most commonly in North Queensland, and stings have been recorded from Bundaberg in Queensland to Broome in Western Australia.