1. Potamopyrgus antipodarum. Specimen with spiral keel following the whorls. Keel overgrown with encrustation, so stout shell outline. Aperture closed by operculum. Shell height 4.5mm. Freshwater pool at top of salting, Dee Estuary, Cheshire.
  2. Potamopyrgus antipodarum. Specimen with spiral keel following the whorls. Keel overgrown with encrustation, so stout shell outline. Aperture closed by operculum. Shell height 4.5mm. Freshwater pool at top of salting, Dee Estuary, Cheshire.

Potamopyrgus antipodarum. Specimen with spiral keel following the whorls. Keel overgrown with encrustation, so stout shell outline. Aperture closed by operculum. Shell height 4.5mm. Freshwater pool at top of salting, Dee Estuary, Cheshire.

Submitted by Ian Smith on
Species
Potamopyrgus antipodarum
Photographer / copyright holder
I.F. Smith
Browse image
No
Top image
Yes
Sidebar Image
Yes