Help ID this black & white worm

Yes it did.

I saw something on it, so I tried to pull it off.

I'm not sure if I cut a part of it off, or if this is the whole thing. I observed it for a while. It was wriggling a little bit.
 
I have the same thing although it is still on the coral as a sort of parasite but it does no harm. It lets out a mucus string in the water to catch particles and then reels them in to eat what ever it catches. Pretty cool but if you have it off already I would just discard it.
 

IF YOU HAD TO TAKE A REEFING EXAM, WOULD YOU PASS?

  • Yes!

    Votes: 32 45.7%
  • Not yet, but I have one that I want to buy in mind!

    Votes: 9 12.9%
  • No.

    Votes: 26 37.1%
  • Other (please explain).

    Votes: 3 4.3%
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