China publishes report on Huangyan Dao blue hole
The Chinese Ministry of Ecology and Environment released a report about a rare blue hole located in Huangyan Island in the South China Sea. The area covers approximately 1,492 square meters, with a diameter of 56.3 meters and an estimated depth of 16.6 meters. Studies indicate that the hole formed at least 3,200 years ago and is characterized by a conical internal shape and rich biodiversity in the surrounding waters. This feature is considered the first of its kind identified in China.
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