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Elysia sp. 21 is caracterized by its pale tan/pinkish background colour with minute green spots (most likely Zooxanthellae), by small pale rounded tubercles, and by blue pigment on the tips of the rhinophores and on the tip of the 'tail'.
How to cite:
Köhler, E. (2016), published 9 November 2016, Elysia sp. 21 Genus: Risso, 1818
available from https://www.Philippine-Sea-Slugs.com/Sacoglossa/Elysia_sp_21.htm