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NASA satellite data analyzed from 2003 to 2022 shows that 21% of the global ocean has darkened, meaning sunlight now penetrates to shallower depths across vast coastal and open-ocean regions. This documentary explores the shrinking photic zone—the sunlit habitat that supports around 90% of marine life—and examines how pollution, sediment, changing ocean circulation, and climate-driven shifts may be reducing the light available to phytoplankton and the wider marine food web. Discover why scientists call global ocean darkening a genuine cause for concern, what remains unexplained, and how the loss of underwater light could reshape marine ecosystems worldwide. #OceanDarkening #MarineLife #OceanScience ---------------------------------------------------------------------------------------- ---------------------------------------------------------------------------------------- Our Social Media: ---------------------------------------------------------------------------------------- ---------------------------------------------------------------------------------------- This video is made for entertainment purposes. We do not make any warranties about the completeness, safety and reliability. Any action you take upon the information in this video is strictly at your own risk, and we will not be liable for any damages or losses. It is the viewer's responsibility to use judgement, care and precaution if you plan to replicate.