Hong Kong has established a 2,400-hectare marine park in the waters off the northern Lantau Island. Its main purpose is to protect the Chinese white dolphin, an endangered species whose numbers continue to decline. The proposal to establish a protected area was made in 2016 to compensate for the expansion of the airport. Twenty years ago, the waters were still home to around 200 of these rare animals. According to the Hong Kong Dolphin Society, only 30 to 40 remain today. Conservationists also blame the gigantic overseas bridge from Hong Kong to Zhuhai and Macau for the decline. A local environmental protection organization doubts that the protected area will bring the animals back. According to the latest data in 2022, only one dolphin was counted in North Lantau.