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The Microscopic Irukandji Can Kill You Faster Than Many Other Animals

At the other end of the scale to the lion’s mane is this little, critter. Don’t be fooled by its diminutive dimensions though; this jelly can pack a nasty punch! The Irukandji is also a member of the box jellyfish family, so its venom rates as some of the most potent in the animal kingdom. Indeed, its toxicity has been estimated to be 100-times greater than that of a cobra! The severe and wide-ranging effects of its sting have even been recognised as a Unique medical condition: irykandji syndrome.


DANGER FACTOR: Irukandji syndrome can cause headaches, nausea, muscle pain, anxiety and, in extreme cases, it can be fatal.

Bell diameter: 25mm (1in)

Tentacle length: < 1m (3.3ft)

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