What color is water? [1]...

What color is water? "Water has an intrinsic color, and this color has a unique origin. This intrinsic color is easy to see, as can been seen in the Caribbean and Mediterranean Seas and in Colorado mountain lakes. Pure water and ice have a pale blue color, best seen at tropical white-sand beaches and in ice caves in glaciers (green colors are usually derived from algae). It is neither due to light scattering (like the sky), nor dissolved impurities (e.g., Cu2+). Because the absorption which gives water its color is in the red end of the visible spectrum, one sees blue, the complementary color of orange, when observing light that has passed through several meters of water. This color of water can also be seen in snow and ice as an intense blue color scattered back from deep holes in fresh snow."