Explore the murky and mysterious ocean depths, the sweeping tides and currents, icy Polar waters and warm, bright coral reefs with this fascinating fact file and learn-it-yourself book. 20 amazing projects and experiments investigate the secrets of the sea – you can make waves in a tank, construct a rock-pool viewer, mix your own seawater and test its saltiness with a homemade hydrometer, build a sea-bird hide, and much more. Over 260 photographs and diagrams clearly explain the experiments and illustrate the scientific principles behind them, so young readers will want to dive straight in and find out all about the sea for themselves. Ideal for home or school use for ages 8 to 12 this fantastic book will give your child hours of entertainment. Find Out About … is a series for young readers who want to explore the wonderful world of science. Each books covers a different topic, bringing the subject to life with vibrant photographs, illustrations and diagrams.