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The research submersible Alvin uses bright lights to illuminate the dark seafloor.
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Human Occupied Vehicle (HOV) Alvin

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This Japanese research ship drills into the ocean floor to learn about Earth’s history and structure.
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Deep Sea Drilling Vessel Chikyu

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The Hawaii Undersea Research Laboratory’s Pisces V submersible is lowered for a dive to study deep-sea corals.
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Submersible Launch

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Alvin, a human occupied vehicle (HOV), returns to the ship after a dive.
Article

From Submarines to Robots: Exploring the Deep Ocean

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Dive through the zones of the ocean to the deep ocean bottom where many strange species live, and there are many yet to be discovered. Explore them in the Deep Ocean Exploration section.
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ROV Exploring the Deep Ocean

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Many medicines were based on a chemical from the sea sponge Tectitethya crypta.
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Five Questions for Shirley Pomponi, Medical Sponge Hunter

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Two nurse sharks hover over a baited cage
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Call to Arms

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