In this episode of Surface Knowledge, we descend into Earth’s final frontier, the deep ocean.You’ll learn how the ocean is divided into five mysterious zones, from sunlit shallows to lightless trenches. We explore the alien creatures that thrive without sunlight, the strange ecosystems powered by underwater volcanoes, and the bizarre technologies used to reach the bottom of the world.We also dive into why so little of the ocean has been explored, how scientists are changing that, and the growing threats from mining, pollution, and overfishing, even in places no human has ever been.From glowing fish to bone-eating worms, crushing pressure to global impact, this is your surface knowledge of the deep ocean.

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