Have any of you wondered about the effects tying materials have on fish? I read how plastics cause lots of heartburn to birds and other sea life, but I have never seen a study regarding lost lures and flies. I'm mostly interested in plastic beads that get ingested, but I guess chenille, Flashabou and anything else not biodegradable would put fish at risk! The evolution of tying materials has really accelerated over the past couple decades and I find it harder and harder to call these new offerings flies considering all the plastic. I would guess most of us are careful about the disposal of fly line, but do we think twice about what's tied on the end of the line. I know I sure see guys losing a ton of flies over the course of a day! I would bet the larger flow rivers flush pretty good and traditional flies probably just rust away amongst the rocks where fish don't give them a second thought, but beads not so much. Maybe trout can pass 10mm beads no sweat; I don't think I will start opening them up to find out!