New Chinese submersible reaches Earth's deepest ocean trench - China livestreamed footage of its new manned submersible parked at the bottom of the Mariana Trench on Friday, part of a historic mission into the deepest underwater valley on the planet. | Poal: Say what you want.

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New Chinese submersible reaches Earth's deepest ocean trench - China livestreamed footage of its new manned submersible parked at the bottom of the Mariana Trench on Friday, part of a historic mission into the deepest underwater valley on the planet. (phys.org)

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