Grateloupia prolongata
- kingdom: Plantae
- phylum: Rhodophyta
- class: Florideophyceae
- order: Halymeniales
- family: Halymeniaceae
- genus: Grateloupia
- species: Grateloupia prolongata
Pointe-à-Pitre
Guadeloupe
Guadeloupe
Isla Vista- Santa Barbara
California
United States