Distributed from the north of Norway to the north of the British Isles and the North Sea.
Unknown - may be a grazer or detritivore
- Diodora graeca has a keyhole shaped opening on the apex
- Slit like hole in front of apex
Conical shell up to 7mm in length (4mm in height). The shell is white or cream in colour.The surface is sculptured with 19-25 radial ridges. Note that there is a small septum below the slit which partially blocks the hole.