The Zoological Society of San Diego is a conservation, education and recreation organization dedicated to the reproduction, protection and exhibition of animals, plants and habitats. The foundation for these activities is provided by the Society’s extensive animal collections and plant collections at the San Diego Zoo and the San Diego Wild Animal Park which include endangered species from around the world.Animal health and nutrition at these parks are monitored by on-site veterinarians and their expert staff. At the Zoological Society’s research arm, the Center for Reproduction of Endangered Species (CRES), 100 scientists, technicians and students work to further the conservation of animals, plants and endangered ecosystems. In addition to laboratory work, the Society also promotes in situ conservation via its field programs in key areas and "hotspots" in China, the Pacific Region, the southwestern United States, the Caribbean Islands, South America, Africa and elsewhere. CRES is also home to the Frozen Zoo®, the world’s largest collection of genetic and reproductive material from endangered animals.