Hi,
For those who know of Strobist (mutiple flash photography on dyr land) I was lucky enough to attend a small two day course with the founder David Hobby. (I know your a fan Cor so this posts for you.)
The "assignement" for the course was to shoot a local hotel here in Dubai and whilst it wasn't an underwater course I still managed to get wet.
Here are a couple of teasers :-


And more here :
http://www.images-underwater.net/Topside_David_Hobby.html
My first "pool shoot" and while not the level of creativity of some of the recent pool shoots on wetpixel recently (had no models) however it was a very fun and demanding course.
Also got the chance to shoot with Joe McNally another world class photog but not near the water.