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Description
Okenia is a genus of dorid nudibranchs in the family Goniodorididae and is accepted in WoRMS. It is widespread, with species in the Indo-Pacific, Atlantic, Mediterranean and the Pacific coast of North America, and includes dozens of species. Diet varies between species: O. elegans from the western Mediterranean feeds on ascidians (Molgula and Ciona), while reports for another Mediterranean species mention both gorgonians and a bryozoan.
Identification
The body is relatively broad, with a much-reduced mantle ridge that bears elongated papillae; similar papillae may arise from the centre of the back. The oral veil is flattened and has no tentacles. In one of the species described, the rhinophores and gills sit on a raised dorsal ridge.
Species in this genus (2)
Sources (5)
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