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Going Deep
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Going Deep Part 1 - Into the Deep
For decades, explorers have been perfecting the crafts that can brave crushing pressure on deep sea dives. Alvin is one successful submersible -- used first by the Navy, then by scientific expeditions.


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Going Deep Part 2 - Deep Science
In 1977, Alvin scientists discovered a whole new world -- an underwater ecosystem reliant not on the sun, but on volcanic vents on the ocean floor.


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Going Deep Part 3 - Greater Depths
When Alvin retires in a few years, what will its successor be like? Scientists are designing the next generation of manned submersible.


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