- Kingdom: Animalia
- Phylum: Bryozoa
- Class: Gymnolaemata
- Order: Cheilostomatida
- Suborder: Neocheilostomatina
- Superfamily: Membraniporoidea
- Family: Electridae
- Scientific name: Electra pilosa
- Norwegian: stjernemosdyr
The colonies form irregular star shapes or broad sheets on algae, hydroid stems, stones, shells or almost any other surface. The zooid boxes are often rectangular boxes of typically 0.45 x 0.3 mm. It may be confused with similar species.
It is common in shallow waters, growing on algae and hydroids.
This is a cosmopolitan, widespread in the Arctic, the Atlantic and Pacific Oceans and in Australia.