What makes a pink sand beach—a million pieces of shattered coral? A trick of the eye and the light? On Harbour Island in the Bahamas—one of the most famous beaches pictured here—the pink hue comes from foraminifera, a microscopic organism that actually has a reddish-pink shell, while the sand is a mix of coral, shells, and calcium carbonate. It sounds like a science project, but in truth, it's one of the most magical things we've seen. Here, nine places around the world with some of the most beautiful pink sand.