Help id snail

[toytech]

Anyone else have these things all over there snails and hermits? Seems like each thing with a shell in my tank has a limpet on it that cruzes around and keeps the shells clean.

[ScubaSteve]

I've never seen any limpet-on-snail action but my old CPR bakpak skimmer was FULL of them. Crud used to build up in the bottom of them skimmer and it was a buffet for guys like these. Come to think of it, I think my CPR was a better refugium than a skimmer...