07 Patella pellucida. Growth Stage 3 (GS3). Littoral. Aberdeen, Scotland, 1971, except 5 from Llŷn, N. Wales, April 1969.

Juveniles with low, streamlined profiles and apex cut away from anterior of shell. The shallow saucer-like shell is very thin and fragile.
1: height (0.9mm) 28% of length (3.2mm).
2: height (1.1mm) 33% of length (3.3mm).
3: height (1.2mm) 31% of length (3.9mm).
4: height (1.7mm) 29% of length (6.1mm).
5: height (1.6mm) 24% of length (6.7mm).
6: apex cut away from anterior of shell.
Mean H/L 27% in Graham & Fretter (1947).
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.

Imprint

Photographic guide to the identification and biology of European marine invertebrates

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