Hello, I just finished feeding my DT and noticed the below extending from a hole in a rock. I quickly snapped some pictures...sorry they are from my phone so not the greatest. I then looked around more and found 2 additional spots with these worm like things. I'm freaking out because I don't really want any worms in my tank if I can help it and if they are going to hurt my corals or fish I'll get them out as soon as possible. I have done checks by getting up at different times to look with a flashlight and have never seen them before. The one rock I saw them out of has some green polyps on it which was added about 2 months ago and I did not dip it before adding. Does anyone know for sure what they are and should I be worried?

