This book provides an in-depth look at these prehistoric-looking reptiles that have survived for more than 210 million years and have endured two waves of mass extinction. Unfortunately sea turtles face a daily threat of extinction. Doug Perrine guides readers through the fascinating lifecycle of the sea turtle, beginning with its harrowing dash from the nest to the ocean as a vulnerable hatchling through the many years spent at sea during maturation, from sexual maturity and reproduction to migration. Perrine describes the evolution of the sea turtle, its anatomy, what conditions led to its endangerment, and the attempts to save it. Detailed descriptions of the green sea turtle, loggerhead turtle, hawksbill turtle, olive ridley turtle, kemp's ridley turtle, Australian flatback turtle, and the leatherback turtle are included. For those who want to learn where to watch sea turtles from the land or from the water, Perrine offers this information as well. Incredible photography depicts sea turtles in the underwater environments.