The box jellyfish is one of the most venomous creatures in the world. It is found primarily in the waters of the Pacific and Indian Oceans. Box jellyfish have a transparent bell-shaped body and long tentacles that contain venomous cells called nematocysts. These cells inject venom into their prey, which can cause paralysis and even death in humans.
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Box jellyfish are responsible for more human deaths in Australia than sharks, crocodiles, and stonefish combined. Their venom is extremely potent and can cause cardiac arrest within minutes. It is important to avoid swimming in areas where box jellyfish are known to inhabit.