16 Patella ulyssiponensis. Length 20.3mm. North Yorkshire. September 2014.

16 Patella ulyssiponensis. Length 20.3mm. North Yorkshire. September 2014.

Shell-layers on interior of this specimen are so thin that exterior rays of colour are visible across whole shell.
Exterior covered with encrusting calcareous alga (pink when alive).

OTHER SPECIES ALBUMS
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