Back up again.
MotionMan
The take away, if they aren't fighting, they're in very serious trouble. Once the body's actions kick in beyond the thinking mind, they're running on mother nature and those are huge signals to act.
I'll point out again "but he was a great swimmer!". It doesn't matter, I'm a seriously strong swimmer, scuba diver, blah, blah. But if water hits my lungs or trachea I don't really have much to say about it at that point.
Think about the times you've swallowed a splash of water down the "wrong hole". yeah, no jokes. Imagine the violent coughs in and out you couldn't control and yet you had plenty of air to breathe.
