The image above depicts Golden Rays in the Gulf of Mexico during their migration from Florida to the Yucatan. It's part of a marvelous larger shot taken along with several others by Sandra Critelli, an amateur photog who was on a whale shark expedition. From The Telegraph:
"It was an unreal image, very difficult to describe. The surface of the water was covered by warm and different shades of gold and looked like a bed of autumn leaves gently moved by the wind.
Golden Rays migration photos (The Telegraph, thanks Brad Keech!)