unidentified organism

I'm not sure if y'all will be able to identify what's in my tank without a picture, but I'll try my best. I just noticed something on one of my rocks that looks like a small stomatella, but it doesn't move. It's pink/red in color, about 1/2" long. The reason I say it looks like a stomatella is because the main portion of it looks to be an oval shaped disc, shell, whatever, with a membrane of sorts holding it to the rock. I checked out Marc's ID page and couldn't find it. Any ideas?
 
How about a chiton?

http://www.melevsreef.com/id/chiton.html
 
Ok, just went back and checked on it to see if there's any movement, and I think I know what it is. It looks like a very tiny anemone. I think it might have fragged off of my BTA, which is right above it. I guess it was closed up when I saw it earlier, but now you can clearly see separate tentacles.
 
How small is it? Maybe this is a majano?

http://www.melevsreef.com/id/majano.html
 
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