8The Archelon was the biggest sea turtle that has ever lived! In this hi/lo title, readers will learn about the ancient turtle's body parts, favorite foods, common behaviors, and more through leveled text and colorful illustrations. Along the way, features map out what the world looked like when the Archelon lived, show off what the Archelon ate, compare the Archelon's size to a common object, and more. The book ends with a two-page profile that puts important Archelon information in one place!