Black Slug looking thing...ID PLEASE!
 

I've seen a couple of these in my tank, they hang around the coral and I can't seem to cut them off with my razor so I'm just wondering what they are!

[IMG]http://i24.photobucket.com/albums/c9/mr_september15/DSC06105.jpg[/IMG]


Please and thank you:)

stellatoma? honestly cant remember, i just know they are reef safe cleaners/algae eaters.

not a stomatella. Looks a bit like a nudibranch.

Yeah, I don't think it's a stomatella either because it doesn't move as much. One of them actually went under a coral and now it has a stalk of xenia on top of it. idk whats going on but I hope it's reef safe! I just had one of my colt corals disappear