| Family | Scientific Name | Common Name | Habitat | Distribution | Image |
|---|---|---|---|---|---|
| Cymodoceaceae | Halodule | Shoal-grass |  (c) Montes de Oca, Joseph - CC-BY-NC, permission granted to NCBG | ||
| Cymodoceaceae | Ruppia | Wigeon-grass |  (c) Horn, Jay | ||
| Cymodoceaceae | Syringodium | Manatee-grass |  (c) Corder, Brandon |