https://www.sciencealert.com/dark-oxygen-discovery-in-ocean-depths-draws-heavy-debate
Could lumpy metallic rocks in the deepest, darkest reaches of the ocean be making oxygen in the absence of sunlight? Some scientists think so, but others have...
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https://www.wusf.org/2024-07-24/scientists-may-have-discovered-dark-oxygen-being-created-without-photosynthesis
It has long been understood that photosynthesis creates oxygen, but researchers believe they've found oxygen being created in parts of the ocean with no light.
dark oxygenscientistsmaydiscoveredcreated