''Cerberilla longibranchus'' is a

species In biology, a species is the basic unit of Taxonomy (biology), classification and a taxonomic rank of an organism, as well as a unit of biodiversity. A species is often defined as the largest group of organisms in which any two individuals of ...

sea slug Sea slug is a common name for some marine invertebrates with varying levels of resemblance to terrestrial slugs. Most creatures known as sea slugs are gastropods, i.e. they are sea snails (marine gastropod mollusks) that over evolutionary ...

, an aeolid

nudibranch Nudibranchs () are a group of soft-bodied marine gastropod molluscs which shed their shells after their larval stage. They are noted for their often extraordinary colours and striking forms, and they have been given colourful nicknames to mat ...

, a

marine Marine is an adjective meaning of or pertaining to the sea or ocean. Marine or marines may refer to: Ocean * Maritime (disambiguation) * Marine art * Marine biology * Marine debris * Marine habitats * Marine life * Marine pollution Military * ...

heterobranch Heterobranchia, the ''heterobranchs'' (meaning "different-gilled snails"), is a taxonomic clade of snails and slugs, which includes marine, aquatic and terrestrial gastropod mollusks. Heterobranchia is one of the main clades of gastropods. Cur ...

mollusc in the

family Family (from la, familia) is a group of people related either by consanguinity (by recognized birth) or affinity (by marriage or other relationship). The purpose of the family is to maintain the well-being of its members and of society. Idea ...

Aeolidiidae Aeolidiidae, a family of aeolid nudibranchs, are a family of sea slug Sea slug is a common name for some marine invertebrates with varying levels of resemblance to terrestrial slugs. Most creatures known as sea slugs are gastropods, i.e. ...

.Bouchet, P. (2015)
''Cerberilla longibranchus''.
In: MolluscaBase (2015). Accessed through: World Register of Marine Species on 2015-11-12

Distribution

This species was described from the

Russia Russia (, , ), or the Russian Federation, is a transcontinental country spanning Eastern Europe and Northern Asia. It is the largest country in the world, with its internationally recognised territory covering , and encompassing one-eigh ...

n Pacific Ocean. It has also been reported from Japan.Baba, K. (1976)
''The genus ''Cerberilla'' of Japan (Nudibranchia: Eolidoidea: Aeolidiidae), with the description of a new species.''
The Veliger, 18(3):272-280. p. 275.

Description

All ''Cerberilla'' species have a broad foot and the cerata are long and numerous, arranged in transverse rows across the body. This species is predominantly brown and the

cerata :''The tortrix moth genus ''Cerata'' is considered a junior synonym of ''Cydia. Cerata, singular ceras, are anatomical structures found externally in nudibranch sea slugs, especially in aeolid nudibranchs, marine opisthobranch gastropod mollus ...

are brown becoming almost black at the tips.

Ecology

Species of ''Cerberilla'' live on and in sandy substrates where they burrow beneath the surface and feed on burrowing sea anemones.

References

{{Taxonbar, from=Q13459862 Aeolidiidae Gastropods described in 1941