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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] From each of the four corners of the bell trails a cluster of 15 tentacles. [4]
Carybdea marsupialis is a small transparent jellyfish with a box-shaped bell [2] about 3 cm (1 in) across, at the four lower corners of which are four elongated tentacles up to 30 cm (12 in) long. The bell has a number of small white or yellowish warts with stinging cells, and near the margin, equidistant from the tentacles, are four rhopalia ...
Most species rage in size anywhere from 15 mm to 40 mm in their adult life. [22] Attached to each corner of the box shaped ball are four tentacles that range in length from species to species. [22] These tentacles are attached to the bell through the pedalium. [23] On these tentacles are specialized cells known as nematocysts. [16]
M. virulenta is one of the largest species of box jellyfish, with tentacle lengths of about three metres at maximum extension. The maximum bell height observed in M. virulenta can range up to 250 mm and the bell width can range up to 200 mm. [3] The bell of M. virulenta is rectangle-shaped and covered with nematocyst warts.
However, the thumbnail-sized Irukandji is a box jellyfish, and lethal despite its small size. There are about 15 tentacles on each corner. There are about 15 tentacles on each corner. Each tentacle has about 500,000 cnidocytes , containing nematocysts , a harpoon-shaped microscopic mechanism that injects venom into the victim. [ 20 ]
The adult bell of the Chiropsella bronzie is small and rounded, and ranges from 3 to 5 cm in diameter, [5] not exceeding 8 cm high and wide. [2] Each corner of the C. bronzie medusae holds up to 9 tentacles on each stalk, or pedalium. [6] [2] Chiropsella bronzie and other box jellyfish
Box jellyfish have complex visual systems. Each of the four rhopalia on the bell of Tripedalia cystophora consists of a group of six eyes of four morphological types. The uppermost and the lowest eye each contains a lens, and there are also a pair of slit eyes and a pair of pit eyes.
Tripedalia are relatively small in size, ranging from 11 to 15 mm. Both species have a cuboid bell and are transparent with a yellowish to brownish color. Their bells contain nematocyst warts that are mainly around the outline of T. cystophora and are thinly spread throughout T. binata.