As the leader of coral biology and coral reef ecology in South China Sea Institute of Oceanography, Huang Hui has been engaged in coral research for nearly 20 years. She is leading the team to establish a large-scale coral bottom sowing experimental area and demonstration area in Nanhai, China.

Coral is called the engine of submarine rainforest or marine life. Coral reefs cover less than two thousandths of the seabed, but provide a living environment for nearly 30% of marine species, which makes coral reefs one of the most diverse ecosystems on earth. There are 500 million people living directly on the coral reef ecosystem in the world, which brings billions of dollars in output value to tourism and fisheries every year. China Nanhai has 2.57% of the world's coral reef resources, ranking eighth in the world.

According to experts, the main body of coral reefs is composed of coelenterate corals. Coral's living conditions are very bad. The water temperature should not be too high or too low. The most suitable temperature should be between 23 degrees Celsius and 27 degrees Celsius. The water pressure should not be too high. The salinity of the water should be moderate and stable, and there should be a clean environment.

Coral and symbiotic zooxanthellae are interdependent. Coral provides nutrition through photosynthesis of zooxanthellae, and coral is colored because of zooxanthellae. If the environment is uncomfortable, the algae leave, the coral turns white, and then slowly dies.

Experts pointed out that coral reefs have sounded the alarm for global climate change. At present, more than one third of the coral reefs in the world are seriously degraded. Rising seawater temperature, ocean acidification, seawater pollution, increased ultraviolet radiation, destructive fishing and offshore engineering interference are all causes of coral reef degradation. Some scientists predict that corals will disappear from the earth within 50 years, triggering the collapse of the entire marine ecosystem.