06 Margarites helicinus. Height 4.1 mm, diameter 5.2 mm. Orkney, Scotland. May 2017. Leg. S.Taylor.

06 Margarites helicinus. Height 4.1 mm, diameter 5.2 mm. Orkney, Scotland. May 2017. Leg. S.Taylor.

1: Live in water. Translucent thin shell reveals body and has lustre.
2: Vacant in water. Lustre retained, but loss of colour as body removed.
3: Vacant dry. Lustre, translucence and colour all diminished.

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