''Atolla'' is a genus of

crown jellyfish Crown jellyfishes are the six family (biology), families of Scyphozoa, true jellyfish that belong to the Order (biology), order Coronatae.Daly, Brugler, Cartwright, Collins, Dawson, Fautin, France, McFadden, Opresko, Rodriguez, Romano & Stake (2 ...

in the

order Order, ORDER or Orders may refer to: * A socio-political or established or existing order, e.g. World order, Ancien Regime, Pax Britannica * Categorization, the process in which ideas and objects are recognized, differentiated, and understood ...

Coronatae. The genus ''Atolla'' was originally proposed by

Haeckel Ernst Heinrich Philipp August Haeckel (; ; 16 February 1834 – 9 August 1919) was a German zoologist, naturalist, eugenicist, philosopher, physician, professor, marine biologist and artist. He discovered, described and named thousands of new s ...

in 1880 and elevated to the

monotypic In biology, a monotypic taxon is a taxonomic group (taxon) that contains only one immediately subordinate taxon. A monotypic species is one that does not include subspecies or smaller, infraspecific taxa. In the case of genera, the term "unisp ...

family level, as Atollidae by Henry Bigelow in 1913. The six known species inhabit the

mesopelagic The mesopelagic zone (Greek language, Greek μέσον, middle), also known as the middle pelagic or twilight zone, is the part of the pelagic zone that lies between the photic epipelagic and the aphotic bathypelagic zones. It is defined by light ...

zone. The

medusae Jellyfish, also known as sea jellies or simply jellies, are the medusa-phase of certain gelatinous members of the subphylum Medusozoa, which is a major part of the phylum Cnidaria. Jellyfish are mainly free-swimming marine animals, althoug ...

possess multiple lobes called lappets at the bell margin. Medusae also have eight

tentacle In zoology, a tentacle is a flexible, mobile, and elongated organ present in some species of animals, most of them invertebrates. In animal anatomy, tentacles usually occur in one or more pairs. Anatomically, the tentacles of animals work main ...

s, alternating with eight

rhopalia Rhopalia (singular: rhopalium) from Ancient Greek ῥόπαλον (''rhópalon'') 'club' are small sensory structures of certain Scyphozoan (true jellyfish) and Cubozoan (box jellyfish) species. Description The structures typically occur in mul ...

, and twice as many lappets occur as tentacles.

Species

*''

Atolla bairdii ''Atolla bairdii'' is a species of true jellyfish in the family Atollidae. It is known from type specimens found in the north Pacific Ocean. Etymology The genus name, ''Atolla'', is derived from the word atoll. The specific epithet was given i ...

'' Fewkes, 1886 *''

Atolla chuni ''Atolla chuni'' is a species of crown jellyfish within the family Atollidae. The species is found distributed in the Southern Ocean and some parts of the southern Pacific and Atlantic Ocean in pelagic environments at depths of up to 5198 meters. ...

'' Vanhöffen, 1902 *''

Atolla clara ''Atolla clara'' is a species of true jellyfish in the family Atollidae. It is known from type specimens found in the north Pacific Ocean. Etymology The genus name, ''Atolla'', is derived from the word atoll An atoll () is a ring-shaped is ...

'' Gershwin & Gordon, 2014 *''

Atolla gigantea ''Atolla gigantea'' is a species of true jellyfish in the family Atollidae. It is known from type specimens found in the north Pacific Ocean. Etymology The genus name, ''Atolla'', is derived from the word atoll.Haeckel, E. (1880). Das System d ...

'' Maas, 1897 *''

Atolla parva ''Atolla parva'' is a species of true jellyfish in the family Atollidae. It is found in the north Atlantic Ocean and in waters around New Zealand. Etymology The genus name, ''Atolla'', is derived from the word atoll. The specific epithet is de ...

'' Russell, 1958 *''

Atolla reynoldsi ''Atolla reynoldsi'' is a species of true jellyfish in the family Atollidae. It is known from type specimens found in the north Pacific Ocean. Etymology The genus name, ''Atolla'', is derived from the word atoll. The specific epithet was given ...

'' Matsumoto et al., 2022 *''

Atolla russelli ''Atolla russelli'' is a species of true jellyfish in the family Atollidae. It is known from type specimens found in the north Pacific Ocean. Etymology The genus name, ''Atolla'', is derived from the word atoll An atoll () is a ring-shaped ...

'' Repelin, 1962 *''

Atolla tenella ''Atolla tenella'' is a species of jellyfish in the family Atollidae ''Atolla'' is a genus of crown jellyfish in the order Coronatae. The genus ''Atolla'' was originally proposed by Haeckel in 1880 and elevated to the monotypic family level, ...

'' Hartlaub, 1909 *''

Atolla valdiviae ''Atolla valdiviae'' is a species of true jellyfish in the family Atollidae. It is known from type specimens found in the north Pacific Ocean. Etymology The genus name, ''Atolla'', is derived from the word atoll An atoll () is a ring-shape ...

'' Vanhöffen, 1902 *''

Atolla vanhoeffeni ''Atolla vanhoeffeni'' is a species of true jellyfish in the family Atollidae. Etymology The genus name, ''Atolla'', is derived from the word atoll. The specific epithet In Taxonomy (biology), taxonomy, binomial nomenclature ("two-term na ...

'' Russell, 1957 *''

Atolla verrillii ''Atolla verrillii'' is a species of true jellyfish in the family Atollidae. It is known from type specimens found in the north Pacific Ocean. Etymology The genus name, ''Atolla'', is derived from the word atoll An atoll () is a ring-shape ...

'' Fewkes, 1886 *''

Atolla wyvillei ''Atolla wyvillei'', also known as the Atolla jellyfish, Coronate medusa, and deep-sea jellyfish, is a species of deep-sea crown jellyfish (Scyphozoa: Coronatae). It lives in oceans around the world. Like many species of mid-water animals, it is ...

'' Haeckel, 1880

References

External links

Video of ''Atolla reynoldsi'' swimming
by

Monterey Bay Aquarium Research Institute The Monterey Bay Aquarium Research Institute (MBARI) is a private, non-profit oceanographic research center in Moss Landing, California. MBARI was founded in 1987 by David Packard, and is primarily funded by the David and Lucile Packard Foun ...

, 2022

croll down Croll is the surname of: * Alexander Angus Croll, (1811-1887) British civil engineer * Dan Croll (born 1990), British singer-songwriter * David Croll (1900–1991), Canadian politician * Doña Croll (born 1953), Jamaican-born British actress * Hack ...

Atollidae Scyphozoan genera Bioluminescent cnidarians Taxa named by Ernst Haeckel {{Scyphozoa-stub