Best Cubozoa

Carukia barnesi is a tiny cubozoan of Australian waters, roughly 2 cm in bell diameter, responsible for Irukandji syndrome, a severe systemic envenomation first clinically described by Jack Barnes in 1964.

Tripedalia cystophora is a small species of box jellyfish found in shallow tropical mangrove habitats, particularly in the Caribbean region. Like other cubozoans, it has four sensory structures called rhopalia; together these carry 24 eyes of several types, including camera-like eyes with lenses. Re...

Alatina alata is a species of box jellyfish in the class Cubozoa, recorded from warm marine waters in several tropical and subtropical regions. It has a translucent, box-shaped bell and four muscular pedal structures from which its tentacles extend. The species is venomous and has been associated wi...

Malo kingi is a very small box jellyfish in the class Cubozoa and one of the organisms associated with Irukandji syndrome. It was formally described in 2007 from specimens collected in Queensland, Australia, and was named for Robert King, a tourist who died in 2002 after being stung near Port Dougla...

A highly venomous box jellyfish of the Indo-Pacific, among the cubozoan species responsible for fatal envenomations in Philippine and Australian waters.

Chiropsalmus quadrumanus is a species of box jellyfish in the class Cubozoa found in warm western Atlantic waters, including the Gulf of Mexico. Its box-shaped bell bears muscular structures from which clusters of tentacles extend, and those tentacles contain stinging cells used in prey capture and...

A cubozoan jellyfish with a circumtropical Indo-Pacific and Atlantic distribution, associated with seasonal mass stinging events in Hawaiian waters.

A box jellyfish from northern Australian waters described in 2005, notable as one of the largest Irukandji species and a documented cause of Irukandji syndrome.

A large Irukandji jellyfish found off northwestern Australia, one of the biggest known members of the family Carukiidae, with documented severe envenomations.

A small carybdeid box jellyfish of the Indo-Pacific known for direct spermatophore transfer during mating, an unusually complex reproductive behavior for medusozoans.

A box jellyfish described from Caribbean waters in 2011, whose informal name reflects the painful exclamation typically provoked by contact with its tentacles.

An Australian box jellyfish in the family Tamoyidae, capable of causing Irukandji-like syndrome through envenomation from its tentacle nematocysts.

A small cubozoan box jellyfish found in the Mediterranean Sea and eastern Atlantic, armed with potent nematocyst-laden tentacles capable of stinging swimmers.

A large box jellyfish from Western Australian waters described by Gershwin in 2014, notable for its unusually large bell relative to other carybdeid box jellyfish.

A small box jellyfish found in Australian and New Zealand coastal waters, commonly called the Jimble and notorious for delivering painful stings.

Alatina mordens is an Indo-Pacific box jellyfish (family Alatinidae) whose potent venom triggers Irukandji syndrome, a potentially life-threatening condition in humans.

A cubozoan jellyfish found in tropical Atlantic waters and one of the earliest formally described members of the family Tamoyidae.

A large box jellyfish found in Queensland, Australia, described in the early 2000s and capable of inflicting severe Irukandji-like stings.

A box jellyfish of the Caribbean and western Atlantic belonging to family Chirodropidae, possessing multiple tentacles on each of its four muscular pedalia.

A box jellyfish found in Hawaiian and central Pacific waters, formerly classified within Carybdea before reclassification into the genus Alatina.

An Australian chirodropid box jellyfish first formally described from Queensland waters, belonging to the multi-tentacled family Chirodropidae.

A small Irukandji box jellyfish described from Philippine waters, belonging to the family Carukiidae and capable of triggering Irukandji syndrome.

The former classification name for what was reclassified as Copula sivickisi; a carybdeid box jellyfish from Indo-Pacific coastal waters with a small, transparent bell.

Carybdea brevipedalia is a cubozoan box jellyfish found in Japanese coastal waters, notable for its shortened pedalia and studied in the context of human envenomation in Japan.

Carybdea xaymacana is a cubozoan box jellyfish of the Caribbean and tropical Atlantic, its species epithet derived from Xaymaca, the indigenous Taíno name for Jamaica.

A box jellyfish described from Australian waters, belonging to family Chirodropidae and characterized by multiple tentacles arising from each pedalium.

A stalked jellyfish found in Japanese coastal waters, notable as one of the few staurozoans formally described from the western Pacific Ocean.