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Description
Plocamopherus is a genus of nudibranchs in the family Polyceridae (subfamily Triophinae, according to Wikipedia; WoRMS access was blocked). The distinctive feature of the genus is a bioluminescent organ at the tip of the pair of appendages behind the gills. Several species are nocturnal and some live in deep water, and they feed on bryozoans. Wikipedia lists at least 15 species. P. tilesii reaches about 10 cm and is recorded across the Indo-Pacific.
Identification
A globular bioluminescent organ sits at the tip of the pair of appendages just behind the gills. In P. tilesii there are three pairs of branching dorsal appendages beside a lobed gill, dark club-shaped rhinophores with white tips, and a rounded oral veil with about two dozen short projections. When threatened the appendage tips flash a bluish-white light.
Species in this genus (2)
Sources (3)
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