Published on: 2026-07-21
Source: People’s Republic of China — Translation
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On June 25, the Ministry of Ecology and Environment of China announced the discovery of a blue hole near Huangyan Island in the South China Sea. This blue hole belongs to a rare global type of marine blue holes, formed as a result of the growth of coral islands. The area of the opening is approximately 1491.7 square meters, with a maximum diameter of 56.3 meters and a depth of 16.6 meters. According to preliminary geochronological studies, the Huangyan Island blue hole was formed at least 3200 years ago.
Blue holes are rare geological formations on Earth. The deep blue color of the water and the unique cave structure make them extremely attractive natural objects, which is why they are often called the “eye of the ocean”.
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