Endangered peach blossom jellyfishes were found in July 2020 at Shuhui village near Wuzhi Mountain, South China’s Hainan province. Photo: Wang Xiaobin/China News Service, VCG

Researchers found Asian small-clawed otters in Hainan’s Diaoluoshan National Nature Reserve in 2019. This species of otters inhabits freshwater wetlands and is the smallest in Asia. Photo: IC Photo

Hainan knobby newt, a species of salamander, is found only in Hainan and recognized as endangered by the International Union for Conservation of Nature. Photo: Xinhua

In December 2019, researchers discovered a new gecko species called Goniurosaurus sinensis in the protected area of the Hainan Tropical Rainforest National Park. Photo: Xinhua

With its rust brown appearance, the Hainan paddy frog is known to position itself on branches, rocks and leaves, as it waits for its prey. The frog species was discovered in Hainan in March 2021. Photo: Yang Jianhuan/Courtesy of National Park of Hainan Tropical Rainforest

A Cyclophiops multicinctus weaves through tree branches in September 2020 in Hainan Bawangling National Nature Reserve. Photo: Luo Yunfei/China News Service, VCG

Wenchengia alternifolia, a plant species that was once believed to be extinct, can be only found in Hainan. Photo: Courtesy of Chinese Academy of Tropical Agricultural Sciences

Thismia jianfenglingensis , a new species of Thismia was discovered in Hainan in March 2020. Photo: Courtesy of Forestry Department of Hainan Province

Xylaria polysporicola, a new macrofungi species, was discovered in the Hainan Tropical Rainforest National Park by researchers from the Chinese Academy of Tropical Agricultural Sciences around March this year. Photo: Courtesy of Chinese Academy of Tropical Agricultural Sciences

Ganoderma applanatum, also known as the artist’s bracket, can be detected in the Jianfengling nature reserve at Hainan Tropical Rainforest National Park. This fungus has long been used in traditional Chinese medicine. Photo: VCG

A wax cicada in Wuzhishan natural reserve at Hainan Tropical Rainforest National Park in September 2020. Photo: Luo Yunfei/China News Service, VCG

A Crimson marsh glider lands on the tip of a plant in the Hainan Baihualing Rainforest in September 2020. Photo: Luo Yunfei/China News Service, VCG

A Hainan partridge sits on a branch. The species is endemic to Hainan and listed as ‘vulnerable’ due to its small population. Photo: VCG

The Hainan peacock-pheasant is an endangered bird and endemic to Hainan island. Photo: Courtesy of Chinese Academy of Tropical Agricultural Sciences

The Hainan leaf warbler, a species of Old World warbler, is found only in tropical forest in Hainan. Photo: VCG

Considered the world’s rarest primate, the Hainan black-crested gibbon is a critically endangered primate endemic to Hainan island. Its population recently grew to 36 gibbons living in five groups, officials from Hainan Tropical Rainforest National Park said on Tuesday. Photo: VCG

The Hainan Eld’s deer lives in the lowlands on the island and is China’s first-level protected wild animal. Photo: VCG

A flock of birds flies above the forest canopy in Hainan Xinying Mangrove National Wetland Park in September 2021. A survey released on Feb. 2 by the Hainan Bird-Watching Society reported 32,866 waterbirds from 71 species wintering across the island, setting a new record. Photo: VCG