This book is suitable for ages 6-9. Kids will love the beautiful, full-colour images and easy-to-read style of this book The book takes kids on an underwater journey, where they will learn about the bodies, feeding habits, and natural habitats of dolphins, whales, seals, and many other marine mammals. Vivid photographs and concise text highlight: which marine mammals can live on land as well as in water; how marine mammals breathe air; and which foods marine mammals eat and how they find it.