I quickly learned that much of a surfer’s success comes from his (or in this case, her) understanding of oncoming swells and waves. This woman is evaluating the height, speed, force, and direction of the approaching surfing opportunities. Wave evaluation is a tricky task, and was shouting a warning to her colleagues as I made this image. The blue color of the ocean here is particularly powerful. The colors of the sea depend upon the nature of the light itself, as well as the depth of the water.