Sea otters hold hands while sleeping so they don’t drift away from each other.
104
Sharks, like other fish, have their reproductive organs in their chests.
248
NYC's Metropolitan Transit Authority (MTA) dumps old subway cars into the ocean to serve as artificial reef.
8
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
The Titanic is about as long as the Empire State building is tall.
174
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