海龟
All six of the sea turtle species present in U.S waters (loggerhead, green sea turtle, hawksbill, Kemp's ridley, olive ridley, and leatherback) are listed as endangered and/or threatened under the Endangered Species Act. The seventh sea turtle species is the Flatback, which exists in the waters of Australia, Papua New Guinea and Indonesia. Sea turtles can be separated into the categories of hard-shelled (cheloniid) and leathery-shelled (dermochelyid). There is only one dermochelyid species which is the leatherback sea turtle.