Scientists exploring the deep Pacific Ocean have reported the discovery of “dark oxygen” nearly 4,000 metres below the ocean surface, where sunlight does not reach. The finding challenges the traditional understanding that oxygen is primarily produced through photosynthesis, which requires sunlight.
The discovery emerged during research on polymetallic nodules located on the ocean floor. These mineral-rich deposits appear to generate oxygen through chemical processes in extreme deep-sea environments. The finding has opened new scientific discussions on alternative pathways of oxygen production and the dynamics of deep-ocean ecosystems.
APSC Relevance: Important for oceanography, deep-sea ecosystems and emerging scientific discoveries.
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