''Janolus savinkini'', common name purple-tipped janolus, is a colorful sea slug, an arminina (a suborder of ''Janolus'') nudibranch, 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 * ...

gastropod The gastropods (), commonly known as snails and slugs, belong to a large taxonomic class of invertebrates within the phylum Mollusca called Gastropoda (). This class comprises snails and slugs from saltwater, from freshwater, and from land. T ...

mollusc Mollusca is the second-largest phylum of invertebrate animals after the Arthropoda, the members of which are known as molluscs or mollusks (). Around 85,000 extant species of molluscs are recognized. The number of fossil species is esti ...

in the

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

Janolidae. The body and caruncle of this species are yellow with a hue of light orange. The papillae and cerata are also this colour except for the tips, which are blue/purple, hence the common name. It is found in East Asian waters and is believed to be extremely rare in

Okinawa is a prefecture of Japan. Okinawa Prefecture is the southernmost and westernmost prefecture of Japan, has a population of 1,457,162 (as of 2 February 2020) and a geographic area of 2,281 km2 (880 sq mi). Naha is the capital and largest city ...

References

* Martynov A.V. & Korshunova T.A. (2012). ''Opisthobranch molluscs of Vietnam (Gastropoda: Opisthobranchia)''. In: Britayev T.A. & Pavlov D.S. (Eds.). Benthic fauna of the Bay of Nhatrang, Southern Vietnam. Vol. 2. Moscow, KMK: 142-257

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Nudibranchia Gastropods described in 2012 {{Gastropod-stub