This big book of ninety-six info-packed pages introduces young readers to all the key science and facts about whales and dolphins in a fun question-and-answer format. The book's wide-ranging Q&As include: Were there prehistoric whales? Are all whales big? Who makes the biggest splash? Who loves to play games? Which prehistoric whale was a monster? How do whales and dolphins breathe? How smart are whales and dolphins? Who finds food with echoes? Who is the unicorn of the ocean? Perfect for learning about marine mammal lives and life cycles, this book is packed with photos and high-quality diagrams. Newly fluent readers will benefit from key content vocabulary with helpful phonetic pronunciations, as well as a glossary and comprehension quiz. This high-interest topic is perfect for introducing students to nonfiction reading. And the fantastic photos and quantity of information will have kids returning to the book again and again, making it a valuable resource for classrooms and libraries.