• Box jellyfish (class Cubozoa) are cnidarian invertebrates distinguished by their box-like (i.e. cube-shaped) body. Some species of box jellyfish produce potent venom delivered...
  • How do box jellyfish kill you The tentacles of a box jellyfish are covered in thousands of tiny, venomous nematocysts.
  • Facts about the Box Jellyfish
    • The box jellyfish is named for its box-like shape
    • The most dangerous species of box jellyfish are Chironex fleckeri, Carukia barnesi...
  • Some species of box jellyfish have tentacles that are 10 feet long, while others, like the species irukandji, are small enough to fit on a quarter.
  • The box jellyfish toxin is one of the most lethal on the planet, comprising chemicals that target the circulatory system, nervous system, and skin cells.
  • Unlike most other jellyfish, who float about dumbly, at the mercy of the currents, box jellyfish have incredible control over their direction and speed.
  • Box jellyfish is the common name for any of the radially symmetrical, marine invertebrates comprising the Cnidarian class Cubozoa...
  • Box jellyfish and Irukandji jellyfish are two of the most well-known species of jellyfish. Both have a deadly sting that can be fatal to humans.
  • The box jellyfish (Chironex fleckeri) are extremely dangerous marine invertebrates that are found in the Atlantic and Pacific oceans.
  • Carybdea branchi, pictured here, is a relative of the Australian box jellyfish (Chironex fleckeri), which is considered the most venomous marine animal.