Dawn, and a clutch of hatchling green sea turtles (Chelonia mydas) emerge from their nest on a beach on Sipadan Island, Borneo, to make for the relative safety of the sea. Turtles, Tortoises & Terrapins: Survivors in Armor by Ronald Orenstein (Firefly Books, $45) gives a comprehensive coverage of the many other species of these shelled animals — their evolution, life history and conservation.