A good interpretation that meets the challenge fully.
A clever and different way of fulfilling the challenge, your subject was obviously very co-operative in holding his breath and a static position while the surface returned to calmness so full marks to him. His expression borders on serenity, very womblike, but instead the cramping of his lips introduces an element of tension too.
Unlike your commenter, I find the white ripples very distracting and detrimental to the overall effect. I presume these are the result of the use of flash? It would have been good to see the result without flash. I like the dark background which for me enhances the result.
A respectable score and appreciative comments so all in all a good result, well done, Sid
An explosion of activity is coming, but here we are, stuck on the edge, with a boy not quite accustomed to the balance between breathing and drowning. It's a startling moment, and he'll smile and relax or come bursting out, and we don't know which, and -- aside from the beautiful processing, the flecks of white scribbles -- that's what has me hooked.