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Becky Hitchin I keep seeing those small gastropods everywhere I go in Scotland and I have no idea what they are. I know this is a zoomed in rubbish photo, but does anyone know?
Marco Faasse I think it's this one: http://www.facebook.com/photo.php?fbid=517810644950503&set=o.341487989207852&type=1&theater
Marco Faasse Margarites helicinus?
Ian Smith I'm sure Marco is right. Size, shape, green refringence, northern location; all spot on. Frequent when I lived in Orkney.
Becky Hitchin Thank you! I'm having such fun learning a whole new suite of critters up here :)
Ian Smith Belatedly, I have clicked on Marco's link, above, to Erling Svensen 's image. Becky's snails are M. helicinus, but are not the same as Erling's with spiral ridges and grooves. M. helicinus is smooth apart from faint growth lines and, on the base of the final whorl, very faint spiral striae that require strong magnification to detect. I think Erling's beautiful image is of
Margarites groenlandicus. According to Graham, 1988, "Prosobranch & pyramidellid gastropods" spawn had only been observed in E. Greenland (1935). I don't know if has been seen since in Norway.
Marco Faasse I did not know M. groenlandicus, so I think Ian Smith has it right.
