I just started taking scuba lessons, you must be very good and have great equipment in order to pull off a shot like that. I hope I see some great sights when I get out of the pool and into the ocean!
I did, in fact, take this shot at the Vancouver Aquarium this afternoon. I've never been to the NWTs, neither do I own an underwater housing for my camera. I was just having a lil fun with the secondary tale.
The original photo was in colour. I converted to b & w, increased contrast and darkened as much as possible, to render the background black, while retaining sufficient tonality for the body contours.