From my experience, I think I have part of the answer here. If you shoot one, and he's dead when he hits the water, he floats. If he is still alive and takes water into his lungs, he sinks. That is the rule of thumb we have so far. And by the way, don't go out and roll your canoe. :shock: I spend an hour trying to find 2 missing guns one day. Got them both, but had to strip them both down and get them cleaned and dry. Not a high point of my hunting career, but it could have been worse.