Rotund Disk snail

Rotund Disk snail

Observation - Rotund Disk snail. Description: Misidentified a couple of times in iSpot but I can find no previous actual record or picture. It is supposed to be common here, Orkney, but I have found only two in recent intensive forays. Easily identified by the gorgeous ribbing on the shell

Misidentified a couple of times in iSpot but I can find no previous actual record or picture.
It is supposed to be common here, Orkney, but I have found only two in recent intensive forays.
Easily identified by the gorgeous ribbing on the shell