What are these?

Anyone have an idea? My guess is nudibrach's. are they bad?

 

Are they moving?

Pull one out and put it against a backround, preferably something that provides contrast (in a container).

Hundreds if not thousands of types of nudibranchs, I have never seen ones so fluffy aka hairy, for lack of a better term.

 

Okay, this is so weird. I figured out what they are. I got up the nerve to touch them with something and it pulled the polyps in and it's an SPS frag. They are little pieces off of my SPS frag above it. But they haven't been broken off. It's almost like it just sprouted babies and fell down.

 

Totally cool!!!!!

 

Does SPS do this though?

 

If that is a Pocillpora than yes, it will perform polyp bailout, as a means of reproduction.