Science
Deep Ocean Mysteries: What We Still Don't Know About Earth's Last Frontier
More than 80 percent of the ocean floor remains unmapped at high resolution. Below 6,000 meters lies the hadal zone — a world of crushing pressure, strange chemistry, and organisms that have never seen sunlight. Hydrothermal vents support entire ecosystems without photosynthesis. Bioluminescent creatures illuminate the midnight zone with cold blue fire. Scientists estimate we have catalogued fewer species from the deep sea than from the surface of Mars. The abyss is not empty. It is full of answers to questions we have barely learned to ask.