- Kingdom: Animalia
- Phylum: Arthropoda
- Subphylum: Crustacea
- Class: Maxillopoda
- Subclass: Copepoda
- Order: Poecilostomatoida
- Family: Rhynchomolgidae
- Scientific name: Doridicola agilis
- Norwegian: -
The body length is usually no more than 1-2 mm. To the naked eye it looks like one or three colored blobs. In the latter case, you are looking at a female with two bags of eggs. The color is usually red, brown, orange, yellow or white.
These are parasites, often observed on nudibranchs.
It is quite common in the North Sea, including Norway, the British Isles and the coasts of central Europe.