Ectocarpus acutus
- kingdom: Chromista
- phylum: Ochrophyta
- class: Phaeophyceae
- order: Ectocarpales
- family: Ectocarpaceae
- genus: Ectocarpus
- species: Ectocarpus acutus
Nanaimo
British Columbia
CanadaMoss Beach
California
United States