| Thalassia | |
|---|---|
|   | |
| Thalassia hemprichii [1] | |
| Scientific classification   | |
| Kingdom: | Plantae | 
| Clade: | Tracheophytes | 
| Clade: | Angiosperms | 
| Clade: | Monocots | 
| Order: | Alismatales | 
| Family: | Hydrocharitaceae | 
| Subfamily: | Hydrilloideae | 
| Genus: | Thalassia Banks ex K.D.König [2] | 
| Type species | |
| Thalassia testudinum Banks ex K.D.König [3]  | |
| Synonyms [4] | |
| SchizothecaEhrenb. | |
Thalassia is a marine seagrass genus comprising two known species. [3]