Parasite or Clean up?

[NaH2O]

I've been watching my slimer slowly deteriorate over the past several weeks. I figured it was my Rabbitfish, that has been known to nip at the tips. I decided to get rid of her, however, looking at the coral today, I noticed these little black "threads". They moved like a worm, and were found in the bleached area. One of them did travel up to the tissue and went part way into a corallite. I took the coral out of the tank to get better pics. Anyone have an idea what these are? I looked at a couple of my other corals, and also see them at the base, and noticed a very small amount of bleaching. Are these guys parasites, or do you think they are cleaning up?

Here are the images. By the way - this is zoomed in 14X and shot through a magnifying glass, so I can't get any closer.

 

[Boomer]

I do not have a clue Nikki Ask Eric or Ron. But I would guess clean up

 

[NaH2O]

Thanks anyway Boomer . I just returned from out of town, so when the lights come on, I'm going to have a good look at everything again & observe them a little more on the other coral before I ask Ron. I took the coral in the photo out to get the 2nd and 3rd pics, so when I put it back in the tank, I covered those guys with super glue.