Margina cocoachroma is a species of sea slug, an aeolid nudibranch, a marine gastropod mollusc in the family Cuthonellidae.Bouchet, P. (2025). Margina cocoachroma (Williams & Gosliner, 1979). In: MolluscaBase (2026). Accessed through: World Register of Marine Species on 2026-03-06.Cella, K; Carmona Barnosi, L.; Ekimova, I; Chichvarkhin, A; Schepetov, D; Gosliner, T. M. (2016). A radical solution: The phylogeny of the nudibranch family Fionidae. PLoS ONE. 11(12): e0167800.
Distribution This species was described from Duxbury Reef, San Francisco, United States. It has been reported as far north as the Olympic Peninsula, Washington.Goddard, J.H.R., (2003 January 20) Cuthona cocoachroma Williams & Gosliner, 1979. [In] Sea Slug Forum. Australian Museum, Sydney.
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