Open cell formations like this are frequently found over ocean. The cells are denser to the left of the frame than to the right, suggesting a gradual warming in water temperature. By looking at this photograph and studying the water color and cloud density, an expert could tell you which ocean you are looking at, the time of year, and the temperature of the water below. This picture was taken in the Indian Ocean, north of Australia.
41-B, February 1984. Picture. #11-37-1875.