Putting top spin on the slipper

This guy comes to the beach often (sometimes with his wife) and I have watched him throwing the slipper for his dog, sometimes into the water and if not, on the sand.  I was standing taking shots of other things, and watching them play.  Then he threw one with an elegant top spin, which altho it looks high in this shot, came down exactly to his dog as he moved forward.   I could hear him praising his dog on his catch.  Fun to watch.
Lots of spray in the air making it look hazy and almost sunset.