Sea otters hold hands while sleeping so they don’t drift away from each other.
104
If Antarctica's ice sheets melted, the worlds oceans would rise by 60 to 65 metres (200 - 210ft) - everywhere
181
Two dogs were among the Titanic survivors.
262
Jellyfish as a species are actually older than dinosaurs and sharks.
383
The Caspian Sea is also classed as the world's largest lake.
52
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
In 1992, 29,000 rubber ducks washed off a ship. They were found thousands of miles away 8 years later.
707