Photographic study of these extraordinary reptiles that have survived for more than 210 million years, including two waves of mass extinction. The Green Sea Turtle, Loggerhead Turtle, Hawksbill Turtle, Olive Ridley Turtle, Kemp's Ridley Turtle, Australian Flatback Turtle, and the Leatherback Turtle are all included. Photographer Doug Perrine also offers tips on where to watch turtles from land or water.