Snail w/o the shell?

[Fishfishfishfish]

Is this a snail with no shell? I can make out 2 eye stalks and it is going around the glass with it's "snout" like a snail would. No idea where this came from. Thanks!

 

[Twocorns]

Stomatella snail. They have a small shell. Great CUC.

 

[BranchingHammer]

+1 stomatella, great!