The North Atlantic gets 2.5 centimetres (1in) wider every year.
119
Sea otters hold hands while sleeping so they don’t drift away from each other.
104
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
NYC's Metropolitan Transit Authority (MTA) dumps old subway cars into the ocean to serve as artificial reef.
8
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
There was once an undersea post office in the Bahamas.
241