Irukandji jellyfish is one of the smallest and most venomous jellyfish in the world.
They are able to fire their stingers into their victim,Irukandji jellyfish's stings are so severe they can cause fatal brain haemorrhages.
Irukandji syndrome is produced by a small amount of venom
Syndromes are severe pain in the back and kidneys, a burning sensation of the skin and face, headaches, nausea, restlessness, sweating, vomiting, an increase in heart rate and blood pressure.
The level of pain on the ladder from 1 to 10 is 10 and lasts 6 to 12 hours sometimes syndromes can last for several days.
Very uncomfortable especially because of the size of the animal so small that you can not see it
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