The North Atlantic gets 2.5 centimetres (1in) wider every year.
119
The Caspian Sea is also classed as the world's largest lake.
52
Scientists have confirmed that Enceladus, one of Saturn’s moons, has a watery ocean.
6
There are approximately three million shipwrecks on the ocean floor, worth billions in value and treasure.
22
There was once an undersea post office in the Bahamas.
241
There are approximately three million shipwrecks on the ocean floor, worth billions in value and treasure.
22
NYC's Metropolitan Transit Authority (MTA) dumps old subway cars into the ocean to serve as artificial reef.
8