Help ID, Please!

[reefin_with_jesus]

I have this strange-looking creature in my tank. It's completely white and looks like a mini-starfish. But, it has six legs instead of five and the legs are really short. It's only about half the size of a dime. I haven't added anything to my tank in a long time, so it must have been in there a while. Any ideas? Sorry, no pics. Thanks alot. Lance.

 

[smalltimer]

I just got back into reefing, but I had some of those in a 200 I had a couple of years ago. They come from your rock. I didn't have any problems with them and they didn't multiply. Hope that helps. Yeah, looks like a f'd up star fish, just the size of a dime or so.