Ocean Deep - Board Book

Ocean Deep is a tunnel-effect board book from Child's Play: layered, cut-away pages make the book look like a window down through the water, from the sunlit surface to the dark deep sea. Children can peer in to spot life at each depth, then turn the pages to look at each ocean zone in turn. The 24-page format, credited to Richard Hadfield, is sturdy enough for small hands and works well for a first talk about how sea life changes with depth.