Last time I saw this story, years ago, I did a little looking around to determine if it was just one person's theory or something generally accepted by experts. It's an important question; misinformation about drowning could get people killed.

I couldn't find evidence of its acceptance by experts - every mention of the theory led back to the same person. But my time and resources were limited, and I have no expertise in this area myself; it's very possible I just didn't know where to look. Does anyone know if this theory is widely accepted by the people who know better than I do?