As I was doing an inspection on my sump this evening I just happened to look up at the bottom glass under the sand bed and noticed this large worm like creature, slowly creeping around the sand, it appears that there were 3 of these and the largest appearing to be around 16 inches in length. In all my years in the saltwater aquarium hobby I have never noticed or seen anything like it. I had google searched to no avail. At first I had thought it was a large bristle worm but up close I knew it wasn't. In addition to the red worms there are several little 1" long black worms as well. I have enclosed a few photo's any I.D and or information would be great!!!