Photography, both above the surface and below, is always about light. How a photographer chooses to work with light or the lack of it will determine the outcome of every press of the shutter button. Sometimes an even natural lighting is best, such as when showing a species in as natural manner as possible. Sometimes restricting the light so that only part of a subject is exposed is desired. I most often use light to make photos that look as natural as possible, but sometimes I like to play and experiment with more artistic uses of light.