Tourists observe migrant birds at Futian mangrove wetland in Shenzhen City, south China's Guangdong Province, Nov. 29, 2024. The Guangdong-Hong Kong-Macao Greater Bay Area boasts a large expanse of mangroves, especially in Shenzhen, Zhuhai, Jiangmen and Huizhou. Growing in the intertidal zones of tropical and subtropical coasts, mangroves play an important role in purifying seawater, preventing wind and waves, sequestering and storing carbon, and maintaining biodiversity. (Xinhua/Liang Xu)

An aerial drone photo shows mangrove forests on Qi'ao Island of Zhuhai City, south China's Guangdong Province, Nov. 27, 2024. The Guangdong-Hong Kong-Macao Greater Bay Area boasts a large expanse of mangroves, especially in Shenzhen, Zhuhai, Jiangmen and Huizhou. Growing in the intertidal zones of tropical and subtropical coasts, mangroves play an important role in purifying seawater, preventing wind and waves, sequestering and storing carbon, and maintaining biodiversity. (Xinhua/Deng Hua)

A forest ranger patrols at Futian mangrove wetland in Shenzhen City, south China's Guangdong Province, Nov. 29, 2024. The Guangdong-Hong Kong-Macao Greater Bay Area boasts a large expanse of mangroves, especially in Shenzhen, Zhuhai, Jiangmen and Huizhou. Growing in the intertidal zones of tropical and subtropical coasts, mangroves play an important role in purifying seawater, preventing wind and waves, sequestering and storing carbon, and maintaining biodiversity. (Xinhua/Liang Xu)

An aerial drone photo taken on Nov. 29, 2024 shows Futian mangrove wetland in Shenzhen City of Guangdong Province and Mai Po mangrove wetland in Hong Kong, south China. The Guangdong-Hong Kong-Macao Greater Bay Area boasts a large expanse of mangroves, especially in Shenzhen, Zhuhai, Jiangmen and Huizhou. Growing in the intertidal zones of tropical and subtropical coasts, mangroves play an important role in purifying seawater, preventing wind and waves, sequestering and storing carbon, and maintaining biodiversity. (Xinhua/Liang Xu)

A black-faced spoonbill flies at a mangrove coastal eco-park in Shenzhen City, south China's Guangdong Province, Nov. 29, 2024. The Guangdong-Hong Kong-Macao Greater Bay Area boasts a large expanse of mangroves, especially in Shenzhen, Zhuhai, Jiangmen and Huizhou. Growing in the intertidal zones of tropical and subtropical coasts, mangroves play an important role in purifying seawater, preventing wind and waves, sequestering and storing carbon, and maintaining biodiversity. (Xinhua/Liang Xu)