The underwater world does strange things to our visual perception. Understanding the following basic concepts will enhance your diving experience. Know that light travels slower underwater. Understand that it is darker at depth.
Light is reflected off the surface and scattered by particles within the water.
Know that water absorbs sunlight. This is particularly useful when collecting crab or other sport fish. Use a dive light to bring back the full spectrum of color at depth. Inc. How things get done. Use of this Web site constitutes acceptance of the eHow Terms of Use and Privacy .