52 Patella pellucida. Growth Stage 4s (early adult on stipe). May 2014. Sublittoral. Egersund, S. Norway. © E. Svensen.

52 Patella pellucida. Growth Stage 4s (early adult on stipe). May 2014. Sublittoral. Egersund, S. Norway. © E. Svensen.

In Norway, the shell-forms on stipes are similar to those on fronds, but they differ by usually lacking any, or many, blue rays on the anterior, and consequently resemble most British GS4 specimens.

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.