The Caspian Sea is also classed as the world's largest lake.
52
NYC's Metropolitan Transit Authority (MTA) dumps old subway cars into the ocean to serve as artificial reef.
8
There was once an undersea post office in the Bahamas.
241
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
The Titanic is about as long as the Empire State building is tall.
174
Jellyfish as a species are actually older than dinosaurs and sharks.
383