Chinese researchers have identified a rare, ancient coral reef blue hole within the Scarborough Shoal lagoon in the South China Sea. This marine blue hole, formed by natural coral reef growth and dating back at least 3,200 years, is distinct from most known blue holes which originated as land caves. The discovery is anticipated to provide new perspectives on the geological and environmental history of the disputed region, and researchers noted a diverse array of marine life within and around the formation. AI
RANK_REASON Discovery of a natural phenomenon in a geopolitically sensitive area. [lever_c_demoted from significant: ic=1 ai=0.0]
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