There are approximately three million shipwrecks on the ocean floor, worth billions in value and treasure.
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The Caspian Sea is also classed as the world's largest lake.
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In 1992, 29,000 rubber ducks washed off a ship. They were found thousands of miles away 8 years later.
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The Titanic is about as long as the Empire State building is tall.
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Water is actually naturally blue.
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If Antarctica's ice sheets melted, the worlds oceans would rise by 60 to 65 metres (200 - 210ft) - everywhere
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It's impossible to sink in the Dead Sea without equipment!
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