Paraplanocera sp. 03  Genus: Laidlaw, 1903

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Species of the genus Paraplanocera are often mistaken for sea slugs because of their head tentacles, which look like the rhinophores of sea slugs.
The identification of this species is tentative, even the genus is a guess!
I am pretty sure, that it is a species of the superfamily Stylochoidea Poche, 1926, in which the genus Paraplanocera is placed.