A lovely and topical picture book about the threat of pollution to the environment, particularly the seashore A brother and sister spend their day playing on the beach by a rock pool. They create their own tiny marine world in a bucket and, with its wildlife, shells, oil, and even a tin can, it is a microcosm of the larger world outside. With a series of stunning watercolors, multi award-winning children's author Michael Foreman makes clear his underlying concern about pollution within the environment.