Hi, sorry for my late answer ... the depth was between 1-45m. at low depth (1-10m) i used only the manual WB. for deeper (lower than 10m) shots i used a red filter and the manual WB together. Note: every change on the depth you have to make a manual WB. don't use the Auto WB. It's a lot of work underwater but then you get the right (true) colors.
Hi, the shots were made with a Sony HDR 520V & Amphibico underwater housing. for night, macro and deeper shots i used additional lights (I-Torch) but normally the best light source is the sun with a correct done manual WB.