Periwinkle shells

Periwinkle shells

Observation - Periwinkle shells. Description: Empty shells; often grey looking in rock pools but in the warm light of home, gorgeous tones. This post though is to show the huge variation in pattern. Scapa Flow winkles.

Empty shells; often grey looking in rock pools but in the warm light of home, gorgeous tones.
This post though is to show the huge variation in pattern. Scapa Flow winkles.
EDIT - added a scale picture. See http://www.ispotnature.org/node/776625 (comments)