This highly popular and long-running series has been revamped for a new generation of readers, with a clean, crisp redesign and colourful covers. The series explores questions that young readers ask about the world around them in an unrivalled child-friendly style. The conversational format is perfect for delivering solid information in a natural, amusing and imaginative way. Designed to amuse and intrigue the young reader, this book combines cartoons with facts and simple analogies to provide an introduction to the mysteries of the sea asking questions such as: which fish has headlights?; what makes waves roll?; and how deep do submarines dive?