MolluscIreland - land and freshwater
  • Myosotella myosotis (Draparnaud 1801) Estuarine mouse-eared snail
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Myosotella myosotis
© Dr Roy Anderson
Myosotella myosotis
© Dr Roy Anderson
Myosotella myosotis
© Dr Roy Anderson

Map hosted by the National Biodiversity Data Centre, Waterford
To view the species profile on Biodiversity Maps and access the live map, please click on the map.


Very similar to Myosotella denticulata but larger and broader and consistently coloured reddish-brown to mid-brown. The outer lip in mature specimens has no more than a single denticle. Habitat is different from that of M. denticulata, living only in partially saline, estuarine conditions.

Key characteristics

  • A slightly shiny fairly robust red-brown shell with body whorl greater than half total height
  • Aperture ear-shaped with two lamellae (one large) on the columella and one denticle or none on the outer lip
  • Whorls flattened and sutures shallow


6.5-8 mm.

World Distribution

Distributed along coasts from Denmark and the British Isles to the Mediterranean and Black Seas. Distribution type: Mediterranean-Atlantic (91).

GBIF distribution map [open in new tab]

Irish Distribution

Locally common around the Irish coast in estuarine or brackish habitats.


  • Confined to sheltered rocky or muddy coastlines at or above HWM in estuaries or sheltered inlets of the sea
  • Shelters under stones and at the roots of saltmarsh vegetation


See Myosotella denticulata.

Red List status

  • Least concern (lc).

Wikipedia link

Wikipedia page for Myosotella myosotis

 Anderson, R., (2016). Myosotella myosotis (Draparnaud 1801). [In] MolluscIreland. Accessed on 2024-03-02.