''Psychropotes'' is a genus of sea cucumbers in the family Psychropotidae. The members of this genus possess the ability to swim, although this is only facultative.

Description

As adults, species of ''Psychropotes'' are roughly cylindrical in shape and red to violet in colour. They have a sail-like appendage which can be used for swimming during the larval stage, but is no longer needed when it is fully grown. Larvae of ''Psychropotes'' species are

benthopelagic The demersal zone is the part of the sea or ocean (or deep lake) consisting of the part of the water column near to (and significantly affected by) the seabed and the benthos. The demersal zone is just above the benthic zone and forms a layer of ...

and swim around using the aforementioned appendage, however researchers are still trying to understand its use when the holothurian is fully grown. Larvae are transparent and can grow to around 2 cm long.

Species

The following species are recognised in the genus ''Psychropotes'': * '' Psychropotes belyaevi'' Hansen, 1975 * '' Psychropotes depressa'' (Théel, 1882) * '' Psychropotes dubiosa'' Ludwig, 1893 * '' Psychropotes dyscrita'' (Clark, 1920) * ''

Psychropotes fuscopurpurea ''Psychropotes'' is a genus of sea cucumbers in the family Psychropotidae. The members of this genus possess the ability to swim, although this is only facultative. Description As adults, species of ''Psychropotes'' are roughly cylindrical in sh ...

'' Théel, 1882 * ''

Psychropotes hyalinus ''Psychropotes'' is a genus of sea cucumbers in the family Psychropotidae. The members of this genus possess the ability to swim, although this is only facultative. Description As adults, species of ''Psychropotes'' are roughly cylindrical in sh ...

'' Pawson, 1985 * ''

Psychropotes longicauda ''Psychropotes longicauda'' is a species of sea cucumber in the family Psychropotidae. It inhabits the deep sea where the adult is found on the seabed. The larva is pelagic and has an appendage shaped like a sail on its back which may enable it ...

'' Théel, 1882 * ''

Psychropotes loveni ''Psychropotes'' is a genus of sea cucumbers in the family Psychropotidae. The members of this genus possess the ability to swim, although this is only facultative. Description As adults, species of ''Psychropotes'' are roughly cylindrical in sh ...

'' Théel, 1882 * ''

Psychropotes minuta ''Psychropotes'' is a genus of sea cucumbers in the family Psychropotidae. The members of this genus possess the ability to swim, although this is only facultative. Description As adults, species of ''Psychropotes'' are roughly cylindrical in sh ...

'' (Koehler & Vaney, 1905) * ''

Psychropotes mirabilis ''Psychropotes'' is a genus of sea cucumbers in the family Psychropotidae. The members of this genus possess the ability to swim, although this is only facultative. Description As adults, species of ''Psychropotes'' are roughly cylindrical in sh ...

'' Hansen, 1975 * ''

Psychropotes monstrosa ''Psychropotes'' is a genus of sea cucumbers in the family Psychropotidae. The members of this genus possess the ability to swim, although this is only facultative. Description As adults, species of ''Psychropotes'' are roughly cylindrical in sh ...

'' Théel, 1882 * ''

Psychropotes moskalevi ''Psychropotes'' is a genus of sea cucumbers in the family Psychropotidae. The members of this genus possess the ability to swim, although this is only facultative. Description As adults, species of ''Psychropotes'' are roughly cylindrical in sh ...

'' Gebruk & Kremenetskaia in Gebruk et al., 2020 * ''

Psychropotes pawsoni ''Psychropotes'' is a genus of sea cucumbers in the family Psychropotidae. The members of this genus possess the ability to swim, although this is only facultative. Description As adults, species of ''Psychropotes'' are roughly cylindrical in sh ...

'' Gebruk & Kremenetskaia in Gebruk et al., 2020 * ''

Psychropotes raripes ''Psychropotes'' is a genus of sea cucumbers in the family Psychropotidae. The members of this genus possess the ability to swim, although this is only facultative. Description As adults, species of ''Psychropotes'' are roughly cylindrical in sh ...

'' Ludwig, 1893 * ''

Psychropotes scotiae ''Psychropotes'' is a genus of sea cucumbers in the family Psychropotidae. The members of this genus possess the ability to swim, although this is only facultative. Description As adults, species of ''Psychropotes'' are roughly cylindrical in sh ...

'' (Vaney, 1908) * '' Psychropotes semperiana'' Théel, 1882 * '' Psychropotes verrucicaudatus'' Xiao, Gong, Kou & Li, 2019 * ''

Psychropotes verrucosa ''Psychropotes'' is a genus of sea cucumbers in the family Psychropotidae. The members of this genus possess the ability to swim, although this is only facultative. Description As adults, species of ''Psychropotes'' are roughly cylindrical in sh ...

'' (Ludwig, 1894) * ''

Psychropotes xenochromata ''Psychropotes'' is a genus of sea cucumbers in the family Psychropotidae. The members of this genus possess the ability to swim, although this is only facultative. Description As adults, species of ''Psychropotes'' are roughly cylindrical in sh ...

'' Rogacheva & Billett, 2009

References

Holothuroidea genera Psychropotidae Taxa named by Johan Hjalmar Théel {{Holothuroidea-stub