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Box jellyfish (class Cubozoa) are ... However, the thumbnail-sized Irukandji is a box jellyfish, and lethal despite its small size. There are about 15 tentacles on ...
The Irukandji jellyfish (/ ɪr ə ˈ k æ n dʒ i / irr-ə-KAN-jee) are any of several similar, extremely venomous species of rare box jellyfish. With a very small adult size of about a cubic centimetre (1 cm 3 or 0.061 in 3), they are both one of the smallest and one of the most venomous jellyfish in the world.
Chironex fleckeri is the largest of the cubozoans (collectively called box jellyfish), many of which may carry similarly toxic venom. Its bell usually reaches about 16 cm (6.3 in) in diameter but can grow up to 35 cm (14 in). [ 8 ]
The medusa is box-shaped and has a maximum height of about 110 millimetres (4.3 in) which is only about one half to one third the size of Chironex fleckeri. On average, however, the animals are much smaller, being more typically 60 millimetres (2.4 in) in height. The maximum inter-radial diameter is 95 millimetres (3.7 in).
This small box jellyfish grows up to 7 cm (2.8 in) across and may have tentacles of up to 2 m (6.6 ft) in total length. It has a transparent box-shaped bell with a very long tentacle trailing from each corner.
Tripedalia is a genus within the family Tripedaliidae that is part of the box jellyfish, ... Tripedalia are relatively small in size, ranging from 11 to 15 mm. Both ...
Eyes tend to differ in size and shape, along with number of receptors (including opsins), and physiology across species of box jellyfish. [ 41 ] Box jellyfish have a series of intricate lensed eyes that are similar to those of more derived multicellular organisms such as vertebrates.
Chirodectes is a very rare, monospecific genus of box jellyfish in the family Chirodropidae. The first and only scientifically studied specimen was captured from the outer edge of the Great Barrier Reef – about 43 km (27 mi) off the coast of northeast Queensland – on 2 May 1997. [2]