Chironex fleckeri, the sea wasp, is widely regarded as the most venomous marine animal on Earth, inhabiting shallow coastal waters of northern Australia and the Indo-Pacific. Unlike most jellyfish, box jellyfish are active hunters with 24 true eyes arranged in clusters, giving them a degree of sophisticated vision. Their tentacles, which can stretch up to 3 meters, contain millions of cnidocytes loaded with one of the fastest-acting venoms in nature.
About the Box Jellyfish
Chironex fleckeri
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💡 Fun Facts
01
Box jellyfish have 24 eyes arranged in four clusters called rhopalia, some of which have corneas, lenses, and retinas similar to vertebrate eyes.
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Despite lacking a brain, box jellyfish can navigate around obstacles and actively hunt prey using their visual system.
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The venom of Chironex fleckeri can kill a human in under 5 minutes, making it one of the deadliest animals on Earth.
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Box jellyfish are the only cnidarians known to actively swim toward their prey rather than drifting passively.
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Vinegar is the recommended first-aid treatment because it deactivates undischarged nematocysts on the skin.
📍 Where to Find This Animal
Habitat Types:
Coastal Tropical Ocean
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