[VFB] quote

[Richard D Zieger OD]

"Point 1.  Water filters out different wavelengths of light     depending on the color of the water and the  type     of suspended material in the water.    Point 2.  Water becomes more monochromatic (one     color) the deeper you go.    Point 3.  Color shifts have been photographed in      clear tropical sea water at 20 feet.  Similar     color shifts take place in shallow    depths in water with significant suspended     material.   "      "What Fish See"     Colin J Kageyama, OD      Rick      .