Chironex box jellyfish (or North Australian box jelly ... knowledge, but the epidemiology of the Irukandji and related jellyfish is as yet unknown, although current re­ search is underway by SurfLife Saving Australia to rec­ tify this. The deadly Irukandji jellyfish which can be found in water temperatures of 26 degrees are migrating to Queensland.

The most common jellyfish involved is the Carukia barnesi, a species of Irukandji jellyfish..

Irukandji jellyfish are any of several similar, extremely venomous species of box jellyfish.With an adult size of roughly a cubic centimetre (1 cm 3), they are both one of the smallest and most venomous jellyfish in the world. In rare instances the sting may result in cardiac arrest and death. Although they may generally appear the same because of their medusa and tentacles, these two classes of species have notable differences. The true jellyfish is a collective term for different species under the Scyphozoa class while the box jellyfish includes all species under the Cubozoa class. Box jellyfish (class Cubozoa) are cnidarian invertebrates distinguished by their cube-shaped medusae.Some species of box jellyfish produce extremely potent venom: Chironex fleckeri, Carukia barnesi and Malo kingi.Stings from these and a few other species in the class are extremely painful and can be fatal to humans. A box jellyfish has tentacles 3m long, and even though the irukandji is invisible in water, uv lights aren't going to make you see it. They inhabit the marine waters of Australia.They are able to fire their stingers into their victim, causing symptoms collectively known as Irukandji syndrome. Les méduses irukandji regroupent plusieurs espèces de petites cuboméduses, de 2 à 3 centimètres de diamètre, dont les piqûres peuvent provoquer le syndrome d'Irukandji, parfois mortel.

LED maybe. Caption: Irukandji Jellyfish. Irukandji syndrome is a condition that results from envenomation by certain box jellyfish. Scyphozoa vs. Cubozoa: The Difference Between True Jellyfish and Box Jellyfish. Ask a seasoned surfer what to do if you get stung by a tropical stinger like a box jellyfish or irukandji and chances are the answer will be along the lines of "wee on it". LED maybe. Also the stingers don't even have to be attached to the bloody thing they can break off and still sting you they just have to be kept wet. “””” The Irukandji most venomous but the box jellyfish kills faster.