Excellent! The moment I saw this thumbnail, I thought, what is floating on top of the water? Looks very much like light shining through a floating mass and dispersing the light as it enters the water. Great decieving desktop:-)
The world is changed. I feel it in the water. I feel it in the earth. I smell it in the air. Much that once was, is lost, for none now live who remember it. -Lord of the Rings, The Fellowship of the Ring
Not too much noise in this pic, but you can always use Neat Image to clear things up. If you have Photoshop, you can play with the layer settings to make some areas sharper and some smoother.