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
Jellyfish as a species are actually older than dinosaurs and sharks.
383
The Titanic is about as long as the Empire State building is tall.
174
It's impossible to sink in the Dead Sea without equipment!
72
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
Sea otters hold hands while sleeping so they don’t drift away from each other.
104