Polybius vernalis
| Polybius vernalis | |
|---|---|
| Scientific classification | |
| Domain: | Eukaryota | 
| Kingdom: | Animalia | 
| Phylum: | Arthropoda | 
| Class: | Malacostraca | 
| Order: | Decapoda | 
| Suborder: | Pleocyemata | 
| Infraorder: | Brachyura | 
| Family: | Polybiidae | 
| Genus: | Polybius | 
| Species: | P. vernalis | 
| Binomial name | |
| Polybius vernalis (Risso, 1816)  | |
| Synonyms | |
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Polybius vernalis, the grey swimming crab, is a small, shallow-water crab in the family Portunidae. P. vernalis is a strictly Mediterranean species.