Ocean and Underwater wallpaper sites

UWphoto.net

Travel and Nature stock photography by award winning underwater photographer Jim Christensen

BestofWallpapers.Com

BestofWallpapers.com is Your Ultimate Place To Get High Quality Free Desktop Wallpapers From Various Categories Easily. We have more than 4500 Wallpapers including, 3D art, Abstract, Backgrounds, Cartoons, Computers, Games, Cars, Bikes, Space, Sports and Nature Available in 1024x768 screen sizes.