Description: This snail is very small, with a brown to yellow spiralled shell, with 6 whorls. The body of the snail is grey with spots of pigment and the head tentacles have a rectangular black mark near the tip, with the left tentacle larger than the right.

Habitat: Muddy sand, in estuaries and salt marshes. Also found in seagrass beds. Most commonly found intertidally, but can be found subtidally with some records suggesting they are found down to 100 m.

Distribution: Recorded from all around Britain and Ireland where there is suitable habitat.

Similar Species: May be confused with some other species, expert identification or a specialist key may be required.

Key Identification Features:

• Very small snail with brown to yellow shell.
• 6 whorls.
• Grey body with pigment spots.
• Black mark at tip of tentacle.
• Left tentacle larger than right.

Distribution Map from NBN: Peringia ulvae at National Biodiversity Network mapping facility, data for UK.

iNaturalist: Peringia ulvae at iNaturalist World Species Observations database.

GBIF data for Peringia ulvae

WoRMS: Peringia ulvae at World Register of Marine Species. Accepted name: Peringia ulvae (Pennant, 1777). AphiaID: 151628.

Classification: Biota; Animalia; Mollusca; Gastropoda; Caenogastropoda; Littorinimorpha; Truncatelloidea; Hydrobiidae; Hydrobiinae; Peringia