A buddy hunting with me shot a nice buck a few years ago, and we trailed it to a pond, and then lost the trail at the waters edge. I looked into the pond thinking the deer may have gone into the water, and there was nothing. We spent 2 hours looking for blood around the pond to determine where the buck had gone, and nothing to be found, then as we were getting ready to leave and retrace out trail, I notice the deer floating in the pond, he sank for a while, then floated back up.