Capturing the motion of water can be difficult, but when it works, it can also be very beautiful. There are all sorts of opportunities to capture water in motion whether a river, waves on a beach, or a tropical waterfall. Even with all of those choices, for this week’s challenge of H2O we went back to perhaps a more simplistic view, an urban view, the water flowing from fountains in various forms. It is a constant all over the world, wherever you go you will find beautiful waterfalls, but sometimes the water itself steals the show and not the ornate statues that adorn the fountain itself. Here are a few of our favorite shots where the water is captured, frozen in the moment.