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It is characterized by its pale tan/white background colour, and by the reticulate pattern of thin black/brown/red lines on the body. In the anterior part of the body is the reticulate pattern broken into thin tranverse lines. There are small brown spots on the bases of the gills. The velar tentacles are long and branched. The rhinophoral sheaths are small
Very similar or possibly the same species is:
Marionia sp. 20 Genus: Vayssière, 1877 which differs by a white longitudinal band and by transverse white patches.
How to cite:
Köhler, E. (2016), published 9 December 2016, Marionia sp. 21 Genus: Vayssière, 1877
available from https://www.Philippine-Sea-Slugs.com/Nudibranchia/Cladobranchia/Marionia_sp_21.htm