They do still exist! Dolphins in Hong Kong waters; and Macau waters for that matter, are seemingly in the media daily, as environmentalists and. In coastal waters of the Pearl River Delta (PRD) region, the Indo-Pacific humpback dolphin (Sousa chinensis) is thought to number approximately. The Pearl River Delta Metropolitan Region (PRD), also known as Zhujiang Delta or Zhusanjiao, This has a strong effect on the pollution levels in the delta. Pollution is a great risk to the Chinese white dolphins that inhabit the area. On March. It was one of the first recorded mentions of the Chinese white dolphin, but would go largely unnoticed until another European, Swedish missionary and naturalist Pehr Osbeck wrote of "snow-white dolphins which tumbled about the ship" and suggested a scientific name for them: Enping , Taishan , Kaiping , Heshan. Its total range is in coastal waters from central China southward throughout Southeast Asia and westward to the Bay of Bengal, with highest densities in and around estuaries. JUST WATCHED Divers rescue entangled dolphin. Cookies are used by this site. Every white cap is a head sticking out of the water, every piece of flotsam is a dorsal fin. Still another problem is reduced amount of freshwater flows into estuaries from rivers. To aid the interpretation of our field observations, we refer to the results of necropsies of calf carcasses stranded and recovered in our research area between and , which indicate that in several cases the main cause of death of stranded calves was asphyxia resulting from blunt-force trauma. Navigation menu Personal tools Not logged in Talk Contributions Create account Log in. Employers of domestic helper killed in fall arrested. Detected in the samples were high levels of heavy metals such as mercury, lead and arsenic, persistent organic pollutants and DDT, an organic chloride pesticide banned in most countries including the mainland. This publication is from a journal that may support self archiving. The species is facing a number of threats that may see the local population wiped out. These dolphins, foreign imports to the city, are nevertheless the ones most familiar to many Hong Kongers, tens of thousands of whom troop through the park every year.