ID on Snail-Looking Thing

[baller71ss]

ANy idea what this is. It looks just like a snail, but doesn't have a shell. Some kind of slug?

Is it harmful? It doesn't seem to be eating any corals, just vacuuming the rock like a regular snail.

 

[Rendos]

Stomatella.

 

[Paintbug]

<a href=showthread.php?s=&postid=6916155#post6916155 target=_blank>Originally posted</a> by Rendos
Stomatella.

yep, good guy to have.

 

[baller71ss]

sweet, thanks!