Thanks very much! To be honest, I can't remember exactly how I created the effect. I know I used masking fluid to save out the reflections on the ocean floor, and a lot of wet-on-wet technique in general for the background.
Thank you so much, it means a lot! I haven't made any instructional DVDs to date, but I've been thinking about it, on and off. I guess it's mostly a matter of confidence and actually getting round to doing it. :)