In my live rock it looks like I have a kind of spider. It is not a fire worm. I saw some legs that look like spider legs. They were white. Does anyone know what it is? It hasn't come out all the way so I am not sure what it is.
I am sure your hairy legs are nice but we looked at a picture of the brittle star and it is not it. I saw at least 4 legs crawling out of the hole. Like a spider.
Well, there is always the "sea spider," a pycnogonid. Google that and see if it is something similar. Otherwise, a picture is really going to be somewhat important.