Box Jellyfish (Chironex sp.)


The box jellyfish (Chironex sp.) is a highly venomous species of jellyfish found primarily in the waters of the Pacific and Indian Oceans, particularly in the coastal regions of Australia and Southeast Asia. It is named for its cube-shaped bell, which can grow up to 30 centimeters in diameter, and its trailing tentacles, which can reach up to three meters in length.

The box jellyfish is considered one of the most venomous creatures in the world, with its venom containing potent toxins that can affect the cardiovascular and nervous systems of humans. Its sting can be extremely painful and in some cases, even deadly.

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Species Information

  • Harmful to humans:  Yes
  • Distribution: The coastal regions of Australia and Southeast Asia
  • Maximum Size:10ft (3m) long, 10 in. (25cm) across 
  • Life Span: Less than 1 year
  • Feeding: Live small fish and crustaceans
  • Temperature: 20-27C (68-80F)
  • Photosynthetic: No
  • Care level: Hard