For millions of years, green sea turtles migrated long distances through the world's oceans. This gentle giant has played an important role in keeping oceans healthy. Unfortunately, green sea turtle populations were severely harmed by human actions in recent centuries. This book explores the history of the green sea turtle as it became endangered, as well as how conservation efforts allowed the turtle's population to rise once again. Amazing photographs of green sea turtles are paired with engaging text and graphic organizers to allow readers to understand the importance of green sea turtle conservation. This book will inspire its readers to do their part to conserve endangered species—including the green sea turtle.