Porphyra nereocystis
- kingdom: Plantae
- phylum: Rhodophyta
- class: Bangiophyceae
- order: Bangiales
- family: Bangiaceae
- genus: Porphyra
- species: Porphyra nereocystis
Campbell River- North Saanich
British Columbia
Canada
Carmel-by-the-Sea- Del Monte Forest
- Pacific Grove
- Santa Cruz
California- Friday Harbor
Washington
United States