Book excerpt: Celebrate Discovery Shark Week all year long with Discovery Sharkopedia, the definitive visual guide to everything there is to know about sharks! With more than 400 incredible color photos of the world's most infamous sharks, including great white, bull, and tiger sharks, Sharkopedia explores the evolution of sharks-did you know sharks have been swimming in the world's oceans since before dinosaurs roamed the earth?-and introduces kids to almost 500 known shark species with close-up portraits of each and fun "fin facts" throughout. Discover what makes sharks expert hunters with detailed sections about shark anatomy, habitats, life cycles, surprising behaviors, and more. Sharkopedia also provides shark conservation resources and offers suggestions for ways to help these amazing, often misunderstood, creatures continue to survive. Want to meet more incredible creatures? Check out the other books in the Discovery Opedia series: Snakeopedia, Dinopedia, and Bugopedia!