In 1992, 29,000 rubber ducks washed off a ship. They were found thousands of miles away 8 years later.
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There are approximately three million shipwrecks on the ocean floor, worth billions in value and treasure.
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NYC's Metropolitan Transit Authority (MTA) dumps old subway cars into the ocean to serve as artificial reef.
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The Caspian Sea is also classed as the world's largest lake.
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There was once an undersea post office in the Bahamas.
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Water is actually naturally blue.
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There are approximately three million shipwrecks on the ocean floor, worth billions in value and treasure.
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