Sea otters hold hands while sleeping so they don’t drift away from each other.
104
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
Jellyfish as a species are actually older than dinosaurs and sharks.
383
Water is actually naturally blue.
48
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
It's impossible to sink in the Dead Sea without equipment!
72
There was once an undersea post office in the Bahamas.
241