Ludwig the Sea Dog

Ludwig and friends live in a world of books. One day, a postcard arrives: Ludwig's friend the penguin has a broken submarine and needs Ludwig's help -- under the sea. How can a dog who lives in a book explore the underwater world? Maybe with a bit of fairy-tale magic and some help from his friends. This is the second 3-D picture book from the author of Ludwig the Space Dog. Get ready for an adventure in another dimension.