http://www.nikonchat.com/nikon-underwater-camera/

Is there a waterproof you could buy for your camera to take pictures under water?
I have the Nikon S230 camera with touch screen. and was wondering if there is anyway that I could take pictures underwater without having to buy a new camera. as a shield equipped only to take pictures with your camera.
They are called underwater housing. http://www.underwaterhousing.us/index.php?k=nikon+s230+underwater+housing&c=2 This is one, but I would not trust it to do anything but keep the rain from your camera. Touch screens enter a unique challenge. Now you use it underwater without exposing them to possible damage? Here is a link to a better underwater housing for Nikon Coolpix http://www.bhphotovideo.com/c/search?Ntt=Underwater+Housing+for+Nikon+CoolPix&N=0&InitialSearch=yes
Olympus E-3 Fourthirds Pro digital SLR camera