Hormothamnion enteromorphoides
- kingdom: Bacteria
- phylum: Cyanobacteria
- class: Cyanophyceae
- order: Nostocales
- family: Nostocaceae
- genus: Hormothamnion
- species: Hormothamnion enteromorphoides
Enewetak
Enewetak Atoll
Marshall Islands
Honolulu- Waimānalo Beach
Hawaii
United States