Yeah I think it is. I've figured out its location for food, noticed it when feeding a few times and finally saw it really good today. A hair raising moment you could say. New tank coming though and starting with dry rock. Nothing will enter the tank without a good dip and I'll probably restart the current rocks in the tank, not taking any chances.
So I think I may have one of these worms. All of the thing I've been able to see..and not see very well looks a lot like the bobbit worm in the picture. Every time I shine my light on it it darts back in the rock. I've only seen it on one rock in my tank. The problem is the rock I've seen it on also has my anemone on it. The anemone is doing very well and I have know idea how I would get it off the the rock since it has put it's self in a nice crevice in the rock. Should I take the rock out and try to get this worm thing out. I've never seen the whole thing maybe just 1/4 to 1/2 inch if even that. Any idea's....As far as I know it hasn't hurt anything that I know of. Thanks