It doesn't even look like pond scum to me! I thought it was a riverbed wash out...from high up! I think its pretty too! :)
Yah I could see this on your wall for sure C: Love the quote below! You are a better mom than me I would not be able to tolerate those things in my house but I think it's great what they are learning and will learn from the experience!!
I thought it was a picture taken from a airplane. I was thinking where did you go? It is really pretty.
It looked like some glaciers to me when I first saw it. I thought the same thing as Amanda, "where did you go?" It is an awsome picture.