Medusozoa genera

Chironex is a genus of box jellyfish in the family Chirodropidae. Their stings are highly venomous, and have caused human fatalities. Based on present knowledge, the genus is restricted to the central Indo-Pacific, ranging from southern Japan to northern Australia.

Chiropsalmus is a genus of box jellyfish in the family Chiropsalmidae.

Tamoya is a genus of box jellyfish within the monotypic family Tamoyidae.

Haliclystus is a genus of stalked jellyfish that contains 13 species. It is the largest genus in the order Stauromedusae. Members of this genus are found in the Pacific, Atlantic, Indian, Arctic, and Southern oceans. Two members of this genus, Haliclystus kerguelensis and Haliclystus antarcticus, are found in the Southern hemisphere only. The remaining 11 members are found in the Northern hemisphere only.

Carukia is a genus of box jellyfish in the Carukiidae family.

Lucernaria is a genus of cnidarians belonging to the family Lucernariidae.

Chirodropus is a genus of box jellyfish in the family Chirodropidae.

Chiropsella is a genus of cnidarians belonging to the family Chiropsellidae.

genus of Box jellyfish

Craterolophus is a genus of jellyfish. It is the only genus in the monotypic family Craterolophidae. Species of this genus are characterized by the absence of primary tentacles, as well as the absence of longitudinal muscles running along the peduncle.

Lipkea is a genus of stalked jellyfish. It is the only genus in the monotypic family Lipkeidae. Lipkea species lack tentacles at the end of their bell.

Manania are a genus of stalked jellyfish in the family Haliclystidae.

thumb|left|Video of Alatina swimming at depth, taken near the Bahamas. Alatina is a genus of box jellyfish within class Cubozoa. It is the largest of the three known genera in the family Alatinidae, and the only one which is not monotypic. It contains the following ten species:

Chiropsoides is a genus of box jellyfish in the family Chiropsalmidae. It is monotypic, with a single species, Chiropsoides buitendijki. The most distinct species characteristics are the shape of the gastric saccules, the pedalial canals, and the unilateral pedalial branching.

Chirodectes is a very rare, monospecific genus of box jellyfish in the family Chirodropidae.

Morbakka is a genus of box jellyfish in the Carukiidae family.

Gigantotheca is a genus of hydrozoans belonging to the family Sertulariidae.