• Norwegian: nakensnegler

Characteristics:

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 sessile animals.

Taxonomy:

The taxonomy of nudibranchs are up for a revision, according to recent genetic studies. The results of these studies seem not to have been incorporated in MarBEF yet. In MarBEF, some families have yet not been assigned in the taxonomic hierarchy. In lack of a consistent hierarchy, I choose to use the traditional taxonomy, presented on the Sea Slug Forum.