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Dark Oxygen in the Pacific Ocean
March 7 , 2026
15 hrs 0 min
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- Scientists have discovered “Dark Oxygen” about 4,000 metres below the Pacific Ocean, where sunlight does not reach.
- Dark Oxygen refers to oxygen found in deep-sea regions without sunlight.
- The discovery was made in the Clarion–Clipperton Zone of the Pacific Ocean.
- Scientists observed oxygen levels increasing near polymetallic nodules on the seafloor.
- Polymetallic nodules contain metals like manganese, nickel and cobalt.
- This discovery challenges the idea that oxygen is produced only through photosynthesis.
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