73 Patella pellucida. Shell length 9.2mm. Growth Stage 4 holdfast dweller (GS4h). September 2014. North Yorkshire, England.

The heart consists of three parallel chambers; the auricle, ventricle and bulbus aorta. It is contained within the pericardial sac (1) behind the left of the nuchal cavity.
Concise
Part 1, SHELL FORMS: 02 Patella pellucida. Growth Stage 2 (GS2). July 2012. Littoral. North Yorkshire, England. © P. Lightfoot.
Part 2, BODY & ANATOMY: 03 Patella pellucida. Growth Stage 3 (GS3). 2009. Sublittoral, Farne Islands, Northumberland, England. © P.Lightfoot.
Part, 3 HABITS & ECOLOGY: 04 Patella pellucida. Length 4.6mm. Growth Stage 3 (GS3). September 2016. Yorkshire, England. © P.Lightfoot.

Imprint

Photographic guide to the identification and biology of European marine invertebrates

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