Phyllodesmium opalescens is a species of sea slug, an aeolid nudibranch, a marine gastropod mollusc in the family Facelinidae.Rosenberg, G. (2015). Phyllodesmium opalescens. In: MolluscaBase (2015). Accessed through: World Register of Marine Species on 2015-10-07
Distribution The type locality of Phyllodesmium opalescens is Mirs Bay, Hong Kong. It has been reported from Korea and the Philippines.
Description This species grows to 20 mm in length. It does not sequester zooxanthellae.Rudman, W.B., 2001 (March 7) Phyllodesmium opalescens Rudman, 1991. [In] Sea Slug Forum. Australian Museum, Sydney.
Ecology The food of Phyllodesmium opalescens is unknown.
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