Which fish can breathe on land? Why do some crabs live in other animals' shells? And what happens when seabirds drink too much sea water? Beginner readers can find the answers to these questions, and lots of other exciting facts, in this colourful book illustrated with photographs. Specially written for children beginning to read on their own, with easy-to-read text prepared with the help of a reading expert. Includes internet links to websites with video clips of seashore life and online activities.