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This is the second largest family of sea cucumbers with over 200 recognized species. [3] Accepted genera are: [1] Actinopyga Bronn, 1860 – 18 species; Bohadschia Jaeger, 1833 – 12 species; Holothuria Linnaeus, 1767 – 163 species; Labidodemas Selenka, 1867 – 8 species; Pearsonothuria Levin in Levin, Kalinin & Stonik, 1984 – 1 species
Holothuria is the type genus of the marine animal family Holothuriidae, [1] part of the class Holothuroidea, commonly known as sea cucumbers. Members of the genus are found in coastal waters in tropical and temperate regions. They are soft-bodied, limbless invertebrates which dwell on the ocean floor and are usually detritivores.
Sea cucumbers can be found in great numbers on the deep seafloor, where they often make up the majority of the animal biomass. [17] At depths deeper than 8,900 m (5.5 mi), sea cucumbers comprise 90% of the total mass of the macrofauna. [18] Sea cucumbers form large herds that move across the bathygraphic features of the ocean, hunting food.
Holothuriida is an order of sea cucumbers. [1] Taxa within the order Holothuriida were previously classified in the order Aspidochirotida, which was determined to be polyphyletic in 2017. Some taxa were also reclassified into the clades Synallactida and Persiculida .
Apodida is an order of littoral to deep-sea, largely infaunal holothurians, sea cucumbers. This order comprises three families, 32 genera and about 270 known species , called apodids , "without feet".
Synallactida is a rankless clade of sea cucumbers, but is referred to as an order. [1] Taxa within Synallactida were previously classified in an order called Aspidochirotida, which was determined to be polyphyletic in 2017. [2]
Cucumaria frondosa (Gunnerus, 1767) – orange-footed sea cucumber; Cucumaria fusiformis Levin, 2006; Cucumaria georgiana (Lampert, 1886) Cucumaria ijimai Ohshima, 1915; Cucumaria insperata D'yakonov & Baranova in D'yakonov, Baranova & Savel'eva, 1958; Cucumaria irregularis Vaney, 1906; Cucumaria joubini Vaney, 1914; Cucumaria koreaensis ...
Chiridotidae is a family of sea cucumbers found in the order Apodida. Within the family, there are 16 recognized genera all with different ranges of body types and functions. [ 1 ] Sea cucumbers play a fundamental role in many marine ecosystems.