Deepest-known Blue Hole Discovered in the South China Sea

2nd May, 2024 CHIRANJIT MITRA CHIRANJIT MITRA

These marine caves formed during past ice ages, now flooded as sea levels rose.

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Where is this Giant?

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How Deep Is It?

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Not Your Typical Reef

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What Might Be Down There?

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Ocean Time Capsule

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Exploration Challenges

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