Dark Oxygen: The Hidden Breath of the Deep Ocean
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Dark Oxygen: The Hidden Breath of the Deep Ocean Introduction The ocean is one of Earth’s last great frontiers. Covering over 70% of the planet’s surface, it has provided humanity with food, trade routes, and inspiration for countless myths and legends. Yet, the deeper we explore, the more mysteries we uncover. Beyond a few hundred meters, sunlight can no longer penetrate, leaving the world below in eternal darkness. In this pitch-black realm—thousands of meters beneath the surface—conditions are extreme. Crushing pressures, freezing temperatures, and the absence of sunlight make survival seem impossible. And yet, life thrives. From bioluminescent fish that flicker like underwater stars to gigantic squid and bizarre worms living around hydrothermal vents, the deep ocean teems with organisms adapted to darkness. But one question has long puzzled scientists: How do these organisms survive without the sunlight-driven photosynthesis that produces the oxygen and food on which most ...