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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 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.
Chirodectes illustration of Chirodectes maculatus Scientific classification Domain: Eukaryota Kingdom: Animalia Phylum: Cnidaria Class: Cubozoa Order: Chirodropida Family: Chirodropidae Genus: Chirodectes Gershwin, 2006 Type species Chirodectes maculatus (Cornelius, Fenner & Hore, 2005) Chirodectes is a very rare, monospecific genus of box jellyfish in the family Chirodropidae. The first and ...
Box jellyfish swim by expanding and contracting their bells vigorously. [6] During the day Tripedalia cystophora is mostly to be found within 20 cm (8 in) of the surface, in sunlit positions among the prop roots of mangroves. These warm sunlit areas are where its main food item, the copepod Dioithona oculata, are to be found during the day. [5]
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 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.
Chiropsalmus quadrumanus is a cube-shaped, colourless, transparent jellyfish with a diameter of about 14 centimetres (5.5 in) and height a little less than this. The body is composed of a gelatinous material and the top edges are rounded while the top surface is flat.
Tamoya haplonema is a species of box jellyfish in the genus Tamoya. It is the type species of the genus and was described in 1859. It is the type species of the genus and was described in 1859. The medusa possesses four tentacles, one each on an inter-radial pedal.