I went for my usual snail hunt for Yindi this morning, and came across this one sitting out in plain sight. The first thing I noticed was that it was really stretched out, I actually thought it was 2 snails mating it was so far out of its shell. Then I noticed the white lump, and it had what looked like fishing nylon come out of it, tapering towards the end. I soon grabbed the camera and noticed the tube on the same side, sticking out quite far.
I assure you its not fishing line, breaks very easily.