Live rock critter

[zbrook1]

Today I noticed two critters on two seperate chunks of live rock.....they look like snails without the shell. They seem to have what looks like two antenna from the head area and seem to be sucking on the rock and move just the way a turbo snail does.What are these things? Thanks.........

 

[aliendomain]

It could be nudibranch, if you post a picture there is a better chance of an ID or do a search in the Coral, Rock and Sand Hitchhikers Forum.

 

[Anonymous]

If they have pretty distinct antenna they may be a stomatella snail (they actually have a shell it's very small though) or a scutus type snail/limpet.