The Caspian Sea is also classed as the world's largest lake.
52
Two dogs were among the Titanic survivors.
262
Sharks, like other fish, have their reproductive organs in their chests.
248
There are approximately three million shipwrecks on the ocean floor, worth billions in value and treasure.
22
The Titanic is about as long as the Empire State building is tall.
174
In 1992, 29,000 rubber ducks washed off a ship. They were found thousands of miles away 8 years later.
707
The North Atlantic gets 2.5 centimetres (1in) wider every year.
119
NYC's Metropolitan Transit Authority (MTA) dumps old subway cars into the ocean to serve as artificial reef.
8