There are approximately three million shipwrecks on the ocean floor, worth billions in value and treasure.
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The North Atlantic gets 2.5 centimetres (1in) wider every year.
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There was once an undersea post office in the Bahamas.
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There are approximately three million shipwrecks on the ocean floor, worth billions in value and treasure.
22
More than a dozen men have stood on the surface of the moon, but only three have been to Challenger Deep in the Marianas Trench, the deepest known spot in the ocean.
17
Tidal forces between the Earth and Moon are slowing the Earth down and pushing the Moon further away.
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In 1992, 29,000 rubber ducks washed off a ship. They were found thousands of miles away 8 years later.
707
Water is actually naturally blue.
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