| Hydrobia | |
|---|---|
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| Apertural view of a shell of Hydrobia ulvae | |
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| (unranked): |
clade Caenogastropoda clade Hypsogastropoda |
| Superfamily: | Truncatelloidea |
| Family: | Hydrobiidae |
| Genus: |
Hydrobia Hartmann, 1821 |
| Synonyms | |
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clade Hypsogastropoda
clade Littorinimorpha
Hydrobia is a genus of very small brackish water snails with a gill and an operculum, aquatic gastropod mollusks in the family Hydrobiidae.
Species within the genus Hydrobia include: