There was once an undersea post office in the Bahamas.
241
NYC's Metropolitan Transit Authority (MTA) dumps old subway cars into the ocean to serve as artificial reef.
8
There are approximately three million shipwrecks on the ocean floor, worth billions in value and treasure.
22
Jellyfish as a species are actually older than dinosaurs and sharks.
383
More than a dozen men have stood on the surface of the moon, but only three have been to Challenger Deep in the Marianas Trench, the deepest known spot in the ocean.
17
The North Atlantic gets 2.5 centimetres (1in) wider every year.
119
It's impossible to sink in the Dead Sea without equipment!
72
Sharks, like other fish, have their reproductive organs in their chests.
248