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Phyllodesmium cf. opalescens differs from Phyllodesmium opalescens by the lack of the series of white marks down the midline. There is a white mark with an orange spot in front of the rhinophores. Just like Phyllodesmium opalescens the cerata, rhinophores and oral tentacles are all capped with white or cream yellow, followed by a bluish region near the end. This shot shows how it was discovered crawling between the soft corals.
Thanks for identification to Ingo Burghardt.
More information on Phyllodesmium opalescens are on Bill Rudman's Sea-Slug Forum!
How to cite:
Köhler, E. (2016), published 25 December 2016, Phyllodesmium cf. opalescens Rudman, 1991
available from https://www.Philippine-Sea-Slugs.com/Nudibranchia/Cladobranchia/Phyllodesmium_opalescens_cf.htm