The Caspian Sea is also classed as the world's largest lake.
52
The roar that we hear when we place a seashell next to our ear is not the ocean, but rather the sound of blood surging through the veins in the ear.
476
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.
707
Water is actually naturally blue.
48
Tidal forces between the Earth and Moon are slowing the Earth down and pushing the Moon further away.
46
If Antarctica's ice sheets melted, the worlds oceans would rise by 60 to 65 metres (200 - 210ft) - everywhere
181
There was once an undersea post office in the Bahamas.
241