Red alga
- kingdom: Plantae
- phylum: Rhodophyta
- class: Florideophyceae
- order: Rhodymeniales
- family: Champiaceae
- genus: Gastroclonium
- species: Gastroclonium coulteri
- Sooke
British Columbia
Canada- Bolinas
- Dana Point
- Isla Vista
- Montara
- Moss Beach
- Pacifica
California
United States