Phylum: Mollusca

Class: Gastropoda

Subclass: Heterobranchia

Superorder: Opisthobranchia

Order: Nudibranchia

 

Norwegian: nakensnegler

(Otterøy - Hordaland / 10 meters / 4.27.2004)

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Nudibranchs earn their name because the lack of a shell. Like other sea slugs their gills are positioned behind the heart. They are all predators, eating hydroids and other animals attached to the bottom or seaweeds.