Water is actually naturally blue.
48
In 1992, 29,000 rubber ducks washed off a ship. They were found thousands of miles away 8 years later.
707
The North Atlantic gets 2.5 centimetres (1in) wider every year.
119
Sharks, like other fish, have their reproductive organs in their chests.
248
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
Jellyfish as a species are actually older than dinosaurs and sharks.
383
Two dogs were among the Titanic survivors.
262