How to Identify Facelinidae

Facelinidae is a animal family in the Animalia kingdom, order Nudibranchia, class Gastropoda. The family contains 36 accepted species worldwide.

Key Identification Features

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Representative Facelinidae Species

How to identify Cratena lineata (Eliot, 1905)

Cratena lineata (Eliot, 1905)

Cratena lineata (Eliot, 1905)

Cratena lineata is an aeolid nudibranch sea slug in the Facelinidae family, desc…

How to identify Pteraeolidia ianthina (Angas, 1864)

Pteraeolidia ianthina (Angas, 1864)

Pteraeolidia ianthina (Angas, 1864)

Pteraeolidia ianthina is a common Eastern Australian aeolid nudibranch that can …

How to identify Phidiana lottini (Lesson, 1831)

Phidiana lottini (Lesson, 1831)

Phidiana lottini (Lesson, 1831)

Phidiana lottini is a facelinid nudibranch (marine gastropod mollusk) found alon…

How to identify Facelina rubrovittata (A.Costa, 1866)

Facelina rubrovittata (A.Costa, 1866)

Facelina rubrovittata (A.Costa, 1866)

Facelina rubrovittata is a species of aeolid nudibranch sea slug found in the Me…

How to identify Cratena pawarshindeorum Bharate, Padula, Apte & Shimpi, 2020

Cratena pawarshindeorum Bharate, Padula, Apte & Shimpi, 2020

Cratena pawarshindeorum Bharate, Padula, Apte & Shimpi, 2020

Cratena pawarshindeorum is a species of aeolid nudibranch sea slug from Maharash…

How to identify Facelina vicina (Bergh, 1882)

Facelina vicina (Bergh, 1882)

Facelina vicina (Bergh, 1882)

Facelina vicina is an aeolid nudibranch sea slug species from the Adriatic Sea d…

How to identify Cratena peregrina (Gmelin, 1791)

Cratena peregrina (Gmelin, 1791)

Cratena peregrina (Gmelin, 1791)

Cratena peregrina, the pilgrim hervia, is an aeolid sea slug found in the Medite…

How to identify Caloria indica (Bergh, 1896)

Caloria indica (Bergh, 1896)

Caloria indica (Bergh, 1896)

Caloria indica is a nudibranch that ranges in size from 25 to 50 mm, native to t…

How to identify Phidiana lynceus Bergh, 1867

Phidiana lynceus Bergh, 1867

Phidiana lynceus Bergh, 1867

Phidiana lynceus is a species of aeolidina nudibranch sea slug found across mult…

How to identify Caloria elegans (Alder & Hancock, 1845)

Caloria elegans (Alder & Hancock, 1845)

Caloria elegans (Alder & Hancock, 1845)

Caloria elegans is a marine species with a 20–35 mm body, found across European …

How to identify Emarcusia morroensis Roller, 1972

Emarcusia morroensis Roller, 1972

Emarcusia morroensis Roller, 1972

Emarcusia morroensis, the Morro Bay Aeolid, is a species of aeolid nudibranch ma…

How to identify Favorinus blianus Lemche & T.E.Thompson, 1974

Favorinus blianus Lemche & T.E.Thompson, 1974

Favorinus blianus Lemche & T.E.Thompson, 1974

Favorinus blianus is a marine species with a max 30 mm length, found across part…

Browse all 36 Facelinidae species →

Frequently Asked Questions

How do you identify Facelinidae?

Facelinidae animals belong to the Nudibranchia order in the Animalia kingdom. The only other currently recognized species in the genus Pteraeolidia, Pteraeolidia semperi, is actually a species complex made up of more than one distinct species. For instant identification, use the iNature app — AI-powered and works offline.

What are the key characteristics of Facelinidae?

Facelinidae is classified in the order Nudibranchia, class Gastropoda, phylum Mollusca. The base body color is milky white, and it has 8 to 10 clusters of dorsal cerata, which can be bright red, purple, brown or blue, with distinctly luminescent blue tips.

Sources: GBIF, iNaturalist, Wikipedia · Disclaimer

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