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
Tidal forces between the Earth and Moon are slowing the Earth down and pushing the Moon further away.
46
There are approximately three million shipwrecks on the ocean floor, worth billions in value and treasure.
22
There are approximately three million shipwrecks on the ocean floor, worth billions in value and treasure.
22
Scientists have confirmed that Enceladus, one of Saturn’s moons, has a watery ocean.
6
There was once an undersea post office in the Bahamas.
241