The box jelly fish developed its frighteningly powerful venom which is used to instantly stun or kill prey, like fish and shrimp, so their struggle to escape wouldn’t damage its delicate tentacles. Their venom is considered to be among the most deadly in the world, containing toxins that attack the heart, nervous system, and skin cells. It is so overpoweringly painful, human victims have been known to go into shock and drown or die of heart failure before even reaching shore. Survivors can experience considerable pain for weeks and often have scarring where the tentacles made contact.
Box jellies, also called sea wasps and marine stingers, live primarily in coastal waters off Northern Australia. Up to 15 tentacles can range up to 10 feet in length. Each tentacle has about 5,000 stinging cells.
Box jellies are highly advanced among jellyfish. They have developed the ability to move rather than just drift, jetting at up to four knots through the water. They also have eyes grouped in clusters of six on the four sides of their face.
Watch out! These stinging guys are coming for you.