You can find it in his website as I said previously but
Here's what he said about that scene:"
Notes from Jim
"Wanna see me almost drown?"
"We had big safety meeting before shooting this scene. All the divers knew what the kill signs were for the scene in case I got into trouble, but what they didn't take into account was that I was wearing all wool. When I hit the water my clothes dragged me right down to the bottom of the water tank, and I couldn't get up to the top. In the scene you can see me in the waves behind the boat kind of reaching for my life trying to get someone's attention. There's one shot where you can see that I'm kind of dying for real. Once I got up to the surface that one time during the shot I started making the kill sign but no one umderstood that I was making the kill sign. So I got pulled back underwater and with my last breath I turned and started swimming the opposite direction of the cameras. I reached the edge of the pool and just hung there and looked back. The storm raged on for another minute or so and I waited there. They didn't even know where I was but once the storm died down they finally saw me hanging on the wall across the lake."
Again... I know too much 'cause the scene already made me feel unconfortable because it seemed so real... and to be honest, seeing someone died isn't exatly fun, even in fiction.
But now I fast forward this scene more than I watched it.
It's freak me out seeing him drown knowing he almost did for real...