The Caspian Sea is also classed as the world's largest lake.
52
Water is actually naturally blue.
48
The North Atlantic gets 2.5 centimetres (1in) wider every year.
119
Scientists have confirmed that Enceladus, one of Saturn’s moons, has a watery ocean.
6
There are approximately three million shipwrecks on the ocean floor, worth billions in value and treasure.
22
There are approximately three million shipwrecks on the ocean floor, worth billions in value and treasure.
22
In 1992, 29,000 rubber ducks washed off a ship. They were found thousands of miles away 8 years later.
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