Coryphella gracilis

Coryphella gracilis, sometimes known by the common name slender eolis, is a species of sea slug, an aeolid nudibranch, a marine gastropod mollusc in the family Coryphellidae.

Coryphella gracilis
Gulen Dive Centre, Norway
Scientific classification
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Gastropoda
Order:	Nudibranchia
Suborder:	Cladobranchia
Superfamily:	Fionoidea
Family:	Coryphellidae
Genus:	Coryphella
Species:	C. gracilis
Binomial name
Coryphella gracilis (Alder & Hancock, 1844)[1]
Synonyms[2]
Eolis gracilis Alder & Hancock, 1844 Flabellina gracilis (Alder & Hancock, 1844) Microchlamylla gracilis (Alder & Hancock, 1844) Eolis smaragdina Alder & Hancock, 1851 Coryphella rufibranchialis var. clavigera Odhner, 1929

Distribution

This species was described from Cullercoats, North Sea. It is a fairly common species found in current-swept sites from northern France to Norway and Iceland. It is also reported from the East coast of North America from Newfoundland south to New England.^[3]

Description

Coryphella gracilis has a narrow body and cerata in well defined clusters. The cerata have a narrow band of white pigment at the tip which is often broken into spots. Mature animals typically measure 12–15 mm in length.^[4] The maximum recorded body length is 25 mm.^[5]

Ecology

Minimum recorded depth is 0 m.^[5] Maximum recorded depth is 33 m.^[5]

The diet of this species is hydroids of the genus Eudendrium.^{[citation needed]}