One hundred or so green sea turtle babies scramble as fast as they can toward the sea. They have just hatched from eggs their mother buried on the sandy beach eight weeks earlier. If they make it to the ocean, they have a good chance of growing to be as heavy as 660 pounds (299 kg). There are many predators on the beach, however—and they are hungry for baby turtles! Young readers will explore the underwater world of this marine reptile through clear text, full-color photos, and diagrams. Age-appropriate activities, such as using tape on the floor to show how big green sea turtles can grow, give readers a chance to make observations and to develop animal-science skills.