Adult Leatherbacks are the most wide-ranging sea turtle species, since they are able to tolerate a broad range of water temperature and can dive deeper than 3,900ft (1,200m). Nesting trends on beaches in the United States have been increasing in recent years, but generally this species is endangered around the world. Nesting populations are hard to monitor since females frequently change their nesting beaches. The World Conservation Union has noted that nesting populations have declined by 80% in the Pacific. Leatherbacks face threats both on nesting beaches and in the water. The continuing primary threats worldwide are long-term harvest of the animal and its eggs and incidental capture in fishing nets of all kinds.