41 Patella pellucida. Early adult, Growth Stage 4 (GS4) . January 2015. Sublittoral. Egersund, S. Norway. © E. Svensen.

41 Patella pellucida. Early adult, Growth Stage 4 (GS4) . January 2015. Sublittoral. Egersund, S. Norway. © E. Svensen.

In Britain, newly settled juveniles less than 2mm long (GS2) are usually found on encrusting red calcareous algae. No images are available of this from Norway, but this early adult (GS4) was photographed on calcareous algae.

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.