With more than 20,000 species of fish and hundreds of reptiles, the ocean is full of a wide range of life. From fierce sharks and shape-changing pufferfish to iguanas that live on land and sea, discover the unique ways fish and reptiles have adapted to life in the ocean. Engaging text and extraordinary photos let readers dive deep into the wild world of the ocean, and included comprehension questions ensure a well-rounded understanding of life beneath the waves.