near line entanglement

It had been a nice but rather uneventful dive, my dive buddy and me had been swimming upstream in Hole in the Wall for about 800 feet or so just enjoying the dive and trying to get a census of some of the life forms in the cave. My buddy was in the lead and he turned and gave me the index finger circle to indicate that we should turn around and start back. As I started my helicopter I felt a tug on my right fin and stopped kicking, I looked back and caught a view of a chunk of hydrilla and, more threateningly, a strand of monofilament line that appeared to be attached to my fin. I reached back and caught the line with my hand and brought it forward. There was considerable resistance as I drug forward a large chunk of hydrilla and a mass of entangled monofilament line that I had apparently dragged with me 800 feet into the cave and had fortunately not become entangled in during the couple of line crossings that I had done. I pushed the mass of line in front of me and flashed my buddy who came over and began to compact the line into a ball that he swam back with and removed from the cave. The upshot was, I was glad that I had a buddy at that point as the thought of having my fin entangled in the guide line was not pleasant. Once you get in the cave when entering from environments in which fishing takes place it might be a good idea to check one another for entanglements. Finally, I feel vindicated for carrying a pair of shears in my cave diving pouch and an extra z knife. Sans buddy the shears and extra knife might have proved to be a life saver.