When I was a kid, my father was cleaning out and digging around our swimming hole with his tractor and saw a big turtle swim under one of the banks. He called a friend of his who liked turtle soup and had him come over to catch it. He (friend) went wading around in the brook- that part was only about 18" deep- poking with a piece of ( I think) rebar - until he felt a familiar "thump". The rest was easy, he just reached into the murky, muddy, stirred up water and pulled the turtle out by his tail!!! His comment was something to the effect " They always go in head first!". Yeah right! This turtle was so big it would barely fit into a large metal garbage can, I can only image the speed and power it had. I've always been fascinated by snappers, I think (in the N.E.) anyway, they are the closest living ancestors we have to some of the armor plated dinosaurs that roamed the Earth.