Onchidiopsis groenlandica is a species of relatively large sea snail with a transparent internal shell, a marine gastropod mollusk in the family Velutinidae.

Because the shell is mostly internal, the snail resembles a sea slug in general appearance.

[1] The maximum recorded (shell?)

[2] The minimum recorded depth for this species is 27 m; maximum recorded depth is 137 m.[2]

This Velutinidae-related article is a stub.