According to a recent 2025 report, the ecological conditions of Hainan Island’s coastal waters remain generally favorable. Seawater quality consistently ranks among the top in China, while marine biodiversity has been maintained at a relatively high level.
The report highlights that pollutant metrics—such as chemical oxygen demand and nutrient levels—remain well below national thresholds in most monitoring stations off the island’s southern shore. Healthy coral reefs, seagrass beds, and fish populations reflect these clean-water conditions.
Experts cited in the report attribute these positive trends to strengthened marine reserves, upgraded wastewater treatment in coastal cities, and community-led reef restoration programs. Collaborative efforts between local authorities, research institutions, and fishing communities have been crucial in preserving these ecosystems.
For young global citizens, entrepreneurs, and eco-conscious travelers, Hainan Island’s coastal health offers valuable lessons in balancing development with conservation. As interest in marine science, sustainable tourism, and blue economy initiatives grows worldwide, the island’s model could inspire similar projects across G20 coastal regions.
Looking ahead, the report calls for continued monitoring and adaptive management to address emerging challenges such as climate change and tourism pressures. Maintaining open data platforms and engaging local stakeholders will be key to ensuring that Hainan’s coastal waters remain a thriving marine habitat.
Reference(s):
Marine ecology off south China's Hainan Island remains favorable
cgtn.com
