34 Patella pellucida. Length 12.7mm. Growth Stage 5 holdfast dweller (GS5h). September 2014. North Yorkshire, England.

34 Patella pellucida. Length 12.7mm. Growth Stage 5 holdfast dweller (GS5h). September 2014. North Yorkshire, England.

Posterior growth (1) exceeds anterior growth (2) . Growth lines are continuous around the whole shell on the adult skirt (3) , but form tilted horseshoes on juvenile growth (4).

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.