Scientists have recently identified an unexpected process producing oxygen in the deep ocean, termed 'dark oxygen.' This discovery is significant as it provides a new understanding of marine ecosystems and potential oxygen sources in areas where photosynthesis cannot occur. The phenomenon was observed in the abyssal zone, particularly in the Clarion- Clipperton Zone, a region noted for its high concentration of polymetallic nodules. One hypothesis suggests that these nodules may generate oxygen by splitting water molecules through electric charge transport. However, the exact mechanism remains unclear. This finding has implications for deep-sea mining, as the removal of polymetallic nodules could harm ecosystems that depend on dark oxygen. India is among the countries pursuing deepsea mining opportunities, highlighting the importance of balancing resource extraction with environmental conservation.