Hypothalassia
| Hypothalassia | |
|---|---|
| Hypothalassia armata | |
| Scientific classification | |
| Domain: | Eukaryota | 
| Kingdom: | Animalia | 
| Phylum: | Arthropoda | 
| Class: | Malacostraca | 
| Order: | Decapoda | 
| Suborder: | Pleocyemata | 
| Infraorder: | Brachyura | 
| Section: | Eubrachyura | 
| Subsection: | Heterotremata | 
| Superfamily: | Eriphioidea | 
| Family: | Hypothalassiidae Karasawa & Schweitzer, 2006 | 
| Genus: | Hypothalassia Gistel, 1848 | 
Hypothalassia is a genus of temperate and tropical deep sea crabs that are found in both Australian and Japanese waters. It comprises two species: Hypothalassia acerba Koh & Ng, 2000, and Hypothalassia armata (De Haan, 1835), both known as the champagne crab.