"The wave pattern seen in the image is not from large ocean waves, however. The pattern is of atmospheric gravity waves on the surface of the ocean. As the name implies, atmospheric gravity waves form when buoyancy pushes air up, and gravity pulls it back down. On its descent into the low-point of the wave (the trough), the air touches the surface of the ocean, roughening the water. The long, vertical dark lines show where the troughs of gravity waves have roughened the surface. The brighter regions show the crests of the atmospheric waves. Beneath the crests, the water is calm and reflects light directly back towards the sensor."Some additional details at NASA. These are not the same as the cosmic gravitational waves much in the news this past week. I don't understand what's going on here, but I think it's cool.