Cerberilla annulata

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Cerberilla annulata is a species of sea slug in the family Aeolidiidae. It is an aeolid nudibranch, a type of marine mollusk.

Distribution
Cerberilla annulata was first described from New Caledonia. It has been found in the Indo‑West Pacific region, from Tanzania to Tahiti and New Caledonia, and is likely widespread throughout that area.

Description
Like other Cerberilla species, it has a broad foot and many long cerata (finger-like projections) arranged in rows across its body. This species has long oral tentacles with light and dark blue bands, and each cerata shows a narrow black band and a yellow band on a white background. Some individuals show additional white pigment on the tentacles and broad black bands on the cerata, which may indicate a group of closely related species.

Ecology
Cerberilla annulata lives on sandy substrates, burrows beneath the surface, and feeds on burrowing sea anemones.

Taxonomy (brief)
Binomial name: Cerberilla annulata (Quoy & Gaimard, 1832). It was originally described as Eolidia annulata.