Pratas) to some extent, though it is believed that their numbers have declined. Seabirds use the islands as resting, breeding, and wintering sites. Species found here include streaked shearwater (Calonectris leucomelas), brown booby (Sula leucogaster), red-footed booby (S. sula), great crested tern (Sterna bergii), and white tern (Gygis alba). Little information is available regarding the current status of the islands' seabird populations, though it is likely that birds may divert nesting sites to smaller, less disturbed islands. Bird eggs cover the majority of Southwest Cay, a small island in the eastern Danger Zone. A variety of cetaceans such as dolphins, orcas, pilot whales, and sperm whales are also present around the islands. This ecoregion is still largely a mystery. Scientists have focused their research on the marine environment, while the ecology of the terrestrial environment remains relatively unknown. Ecological hazards Political instability, tourism and the increasing industrialisation of neighbouring countries has led to serious disruption of native flora and fauna, over-exploitation of natural resources, and environmental pollution. Disruption of nesting areas by human activity and/or by introduced animals, such as dogs, has reduced the number of turtles nesting on the islands. Sea turtles are also slaughtered for food on a significant scale. The sea turtle is a symbol of longevity in Chinese culture and at times the military personnel are given orders to protect the turtles. Heavy commercial fishing in the region incurs other problems. Although it has been outlawed, fishing methods continue to include the use of bottom trawlers fitted with chain rollers. In 1994 a routine patrol by Taiwan's marine navy confiscated more than 200 kg of potassium cyanide solution from fishermen who had been using it for cyanide fishing. These activities have a devastating impact on local marine organisms and coral reefs. Some interest has been taken in regard to conservation of these island ecosystems. J.W. McManus, professor of marine biology and ecology at the University of Miami's Rosenstiel School of Marine and Atmospheric Science, has explored the possibilities of designating portions of the Spratly Islands as a marine park. One region of the Spratly Archipelago, named Truong Sa, was proposed by Vietnam's Ministry of Science, Technology, and the Environment (MOSTE) as a future protected area. The site, with an area of , is currently managed by the Khánh Hòa Provincial People's Committee of Vietnam. Military groups in the Spratly Islands have engaged in environmentally damaging activities