Bog iron of the sea? I'm putting a bet down that chemotrophs have a role in forming these near mineral rich seeps #geobiochemistry #microbiology
https://www.cbc.ca/news/science/oxygen-ocean-study-conflict-1.7273929

Researchers say oxygen is being produced on the ocean floor. The mining company funding them isn't happy | CBC News
The discovery of oxygen being produced on the ocean floor — apparently by ancient lumps of metal — has put the scientists behind the landmark study at odds with the Canada-based mining company that funded them.