Now I'll tell you what it is...I was stepping off my back deck to check on the horses, when I looked into our rain barrel. There was a layer of green tree pollen (super heavy here in NC) and it was just floating on top of the water in our barrel. When the drops from the down spout hit the surface of the water, it reminded me of those swirl art pictures we used to make at the local fairgrounds. I didn't have my glasses on , so I just pointed and shot. I used my zoom so you wouldn't see the blue barrel sides. When I downloaded the picture, this came up....I think the green was washed out by the reflection of the blue walls. Pretty cool, huh?