| SNo. | Scientific Name | Locality | Habitat | Basis of Record | Description | Recorded By | Record Number | Island | Source | Date |
|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Ceramium hamatispinum | Moku Manu Islet, Mokapu Peninsula, Kaneohe | Preserved_Specimen | Bernatowicz, A.J. | 5511 | Oahu | BISH | 1955-09-06 | ||
| 2 | Ceramium hamatispinum | Moku Manu Islet, Mokapu | Preserved_Specimen | Bernatowicz, A.J. | 5511 | Oahu | BISH | 1955-09-06 | ||
| 3 | Ceramium hamatispinum | Launiupoko | collected from drift | Preserved_Specimen | Male. | Abbott, D.P. | 12544 | Maui | BISH | 1976-08-31 |
| 4 | Ceramium hamatispinum | Kipukai, Ash Lizard | on limestone boulder, intertidal, color: yellow, growing in masses, 3-4 cm diameter. | Preserved_Specimen | Magruder, W.H. | 207 | Kauai | BISH | 1980-03-21 | |
| 5 | Ceramium hamatispinum | Makaha Caverns | Preserved_Specimen | Mixed with Ceramium fimbriatum Setchell & Gardner. | Hodgson, L.M. | 18856 | Oahu | BISH | 1988-08-05 |