I have no idea what sort of worm this is. But at a guess, it might be some sort of intestinal worm. Being on or near the Bidgee such a worm could survive long enough for you to find it and take a photo of it. It might have come from road kill, picked up by a bird and then dropped. Plenty of road kill around Gordon...rabbits, foxes, roo's etc.
itsaboat mate...Life is just a boat and then ya marry one !