September 20th marks China’s National Coral Day. Coral reefs, known as the "tropical rainforests of the ocean," are home to countless marine species and serve as natural barriers protecting coastlines. In certain waters of Sansha, the Xisha Marine Environment National Observation and Research Station of Hainan conducted a coral survey, discovering vast stretches of vigorously growing coral with rich diversity and vibrant colors. This demonstrates the positive outcomes of marine environmental protection efforts in recent years. Now, follow our camera lens to explore the wonders of this underwater world.