Looks like 1/2 worm. If you can remove it and photograph is in a shallow dish with a better background someone on here might be able to see what you have there.
Otherwise, how about a belated Welcome to Reef2Reef~!
Thank you for the advice. After removing , seems to have been a brisle. He was also dead. I have seen them before just seemed to be a tad bit different color. I have so much to learn. Not as easy as you would think, but it is pretty cool when I'm not anxious over it lol.