The Box Jelly fish is deadly by it's poison. When it's needle like tentacle touches your skin a sensor tells the tentacle to let toxic chemicals into the skin. These chemicals could travel into the heart and kill a human in a matter of minutes. About twenty to forty humans die a year. Most of the big box jelly fish would kill you in almost 2 minutes. There are 50 species of jelly fish of box jelly fish in the world.
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