47 Patella pellucida. Growth stage 5 (late adult) on Laminaria hyperborea frond. January 2016. Sublittoral. Egersund, S. Norway. © E. Svensen.

47 Patella pellucida. Growth stage 5 (late adult) on Laminaria hyperborea frond. January 2016. Sublittoral. Egersund, S. Norway. © E. Svensen.

Those that survive as later-adults (GS5f) on fronds continue to have blue rays all around the shell as it grows, and a few, such as this, gain sufficient height to approximate to a Phrygian cap in profile.

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.