But if you have the proper filters on your lens, or if you use Photoshop (like I do) to filter out some of the blue light, the rest of the colors magically emerge and then your photos look identical to what the human eye sees while underwater. Check out these awesome Pink Skunk Clownfish hiding out in their little anemone nest!
The deeper underwater you go, the more the colors change because the colors that have shorter wavelengths get filtered out by the water. So when you take photos down deep, they tend to look very blue and washed out.