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

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

M. helicinus is a very active species. Exposed parts in this image are the posterior of the foot, the operculum, the epipodial tentacles in constant movement to detect approaching threats, and the cephalic tentacles ‘used as a blind man uses a stick’ (Fretter & Graham, 1977).

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