Hypselodoris nigrolineata is a species

Species

In biology, a species is one of the basic units of biological classification and a taxonomic rank. A species is often defined as a group of organisms capable of interbreeding and producing fertile offspring. While in many cases this definition is adequate, more precise or differing measures are...

 of colourful sea slug

Slug

Slug is a common name that is normally applied to any gastropod mollusc that lacks a shell, has a very reduced shell, or has a small internal shell...

 or dorid nudibranch

Nudibranch

A nudibranch is a member of what is now a taxonomic clade, and what was previously a suborder, of soft-bodied, marine gastropod mollusks which shed their shell after their larval stage. They are noted for their often extraordinary colors and striking forms...

, a marine

Marine (ocean)

Marine is an umbrella term. As an adjective it is usually applicable to things relating to the sea or ocean, such as marine biology, marine ecology and marine geology...

 gastropod mollusk in the family

Family (biology)

In biological classification, family is* a taxonomic rank. Other well-known ranks are life, domain, kingdom, phylum, class, order, genus, and species, with family fitting between order and genus. As for the other well-known ranks, there is the option of an immediately lower rank, indicated by the...

 Chromodorididae

Chromodorididae

Chromodorididae are a taxonomic family of medium-sized to large, colorful, sea slugs; dorid nudibranchs in the superfamily Doridoidea. These are marine gastropod mollusks....

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Description

Hypselodoris nigrolineata has a white-cream body and a bright purple mantle edge and foot. There are often black striated lines running longitudinally along its dorsum

Dorsum (biology)

In anatomy, the dorsum is the upper side of animals that typically run, fly, or swim in a horizontal position, and the back side of animals that walk upright. In vertebrates the dorsum contains the backbone. The term dorsal refers to anatomical structures that are either situated toward or grow...

. The gills and rhinophores are orange.

This species can reach a total length of at least 35 mm. It is similar in appearance to Hypselodoris maritima

Hypselodoris maritima

Hypselodoris maritima is a species of colourful sea slug or dorid nudibranch, a marine gastropod mollusk in the family Chromodorididae.-Distribution:This nudibranch is found in the Western Pacific Ocean from New Caledonia to Japan.-Description:...

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External links

• Hypselodoris nigrolineata page at nudipixel