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.
Description The maximum recorded (shell?) length is 95 mm.Welch J. J. (2010). "The "Island Rule" and Deep-Sea Gastropods: Re-Examining the Evidence". PLoS ONE 5(1): e8776. .
Habitat The minimum recorded depth for this species is 27 m; maximum recorded depth is 137 m.
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