- Kingdom: Animalia
- Phylum: Mollusca
- Class: Gastropoda
- Subclass: Heterobranchia
- Order: Nudibranchia
- Suborder: Euctenidiacea
- Infraorder: Doridacea
- Norwegian: -
Characteristics:
These nudibranchs often have a flattened body and short or no tubercles at all. They usually thrives on stony bottom or on algae, where they feed on Bryozoans or hydroids.
Taxonomy:
These nudibranchs were formerly considered members of a suborder Doridina. The taxonomy of nudibranchs is currently under investigation, based on recent genetic studies.