04 Patella pellucida. Length 4.6mm. Growth Stage 3 (GS3). September 2016. Yorkshire, England. © P.Lightfoot.

04 Patella pellucida. Length 4.6mm.  Growth Stage 3 (GS3). September 2016. Yorkshire, England. © P.Lightfoot.

Juvenile (GS3) in pit eaten into Laminaria stipe. A dark chestnut band on the distal face of the horseshoe-shaped pedal-retractor muscle can be seen through the translucent shell.