Pictures of pests?

[dsaundry]

Hi. I am trying to find a good web site for reef pests. I am not sure if it is a pest or not as I only got a quick look at it. Brief description. I believe it is a worm. It looked like a regular worm with a rings around it. Is it a Bristle worm? I looked at some pictures on the web and it doesnt really look like one, but I am assuming there are many varieties. Any suggestions??