Name: Rare coral reef blue hole found in South China Sea
Uploaded: 2026-06-25T16:59:16+08:00
Duration: 1 min 57 s
Description: Inside a rare blue hole in the South China Sea, scientists found a thriving ecosystem filled with corals, fish, sea turtles and other marine life. Researchers say the blue hole took shape through the long-term growth of coral reefs.They believe it began

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01:57

Inside a rare blue hole in the South China Sea, scientists found a thriving ecosystem filled with corals, fish, sea turtles and other marine life. Researchers say the blue hole took shape through the long-term growth of coral reefs.They believe it began forming at least 3,200 years ago, making it the first coral reef blue hole identified in China.

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