NYC's Metropolitan Transit Authority (MTA) dumps old subway cars into the ocean to serve as artificial reef.
8
The Caspian Sea is also classed as the world's largest lake.
52
There was once an undersea post office in the Bahamas.
241
Sea otters hold hands while sleeping so they don’t drift away from each other.
104
In 1992, 29,000 rubber ducks washed off a ship. They were found thousands of miles away 8 years later.
707
The time interval from first sighting of the iceberg that sank the Titanic to impact was a little over 30 seconds.
105
Water is actually naturally blue.
48
The North Atlantic gets 2.5 centimetres (1in) wider every year.
119