Jellyfish as a species are actually older than dinosaurs and sharks.
383
Water is actually naturally blue.
48
Two dogs were among the Titanic survivors.
262
The Caspian Sea is also classed as the world's largest lake.
52
The North Atlantic gets 2.5 centimetres (1in) wider every year.
119
In 1992, 29,000 rubber ducks washed off a ship. They were found thousands of miles away 8 years later.
707
It's impossible to sink in the Dead Sea without equipment!
72