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.
48
There was once an undersea post office in the Bahamas.
241
The Caspian Sea is also classed as the world's largest lake.
52
If Antarctica's ice sheets melted, the worlds oceans would rise by 60 to 65 metres (200 - 210ft) - everywhere
181
NYC's Metropolitan Transit Authority (MTA) dumps old subway cars into the ocean to serve as artificial reef.
8
Scientists have confirmed that Enceladus, one of Saturn’s moons, has a watery ocean.
6
The North Atlantic gets 2.5 centimetres (1in) wider every year.
119