What is this?

[TheSteve]

Looks like a snail and appears to have a soft outer shell. It is almost the same color as the rocks.

Any ideas??

[Rick_Newton]

Not sure what it is but I have one to. Doesn't are to be mobile but just appeared one day and hasn't changed any. Didn't lose it when I moved the rock to my new tank. Be interesting to know if others can ID.

[JohnO]

Looks a bit like a Limpet to me :-)

http://hmsc.oregonstate.edu/projects...ts.html#sheild

John

[TheSteve]

Thanks..!!

Steve

[reefman_MC]

I have tons of them. They never hurt anything.

[Gresham]

I do too, and they they're a pain in the you know what for me. They get into my becket and clog it. It's gotten so bad, I keep and extra injector around and soak the clogged one in muratic acid. Dang pests. I only have that problem at work though, my system at home doesn't fluctuate enough to get them really breeding.

[JohnO]

Gresham,

You poor man, nothing worse than a Limpet up your Becket :-) I picked mine up from the beach and they are not only intertidal but inter everything else too :-)

Cheers

John