The Caspian Sea is also classed as the world's largest lake.
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Water is actually naturally blue.
48
Sharks, like other fish, have their reproductive organs in their chests.
248
The Titanic is about as long as the Empire State building is tall.
174
Sea otters hold hands while sleeping so they don’t drift away from each other.
104
Jellyfish as a species are actually older than dinosaurs and sharks.
383
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