5.If all the gold in the ocean was mined, there would be enough to give each person on Earth nine pounds.
6.This is a drawing of John Lethbridge's diving machine. It was the first "scuba suit," created around 1710.
7.Divers that travel one hundred feet underwater experience nitrogen narcosis, an effect that makes them feel drunk.
8.It takes about one thousand years for water to travel around the entire planet.
9.If all the ice found in glaciers and ice sheets melted, then the sea level would rise by roughly 262 feet (80m). That's as tall as a 26-story building.
10.With a heart about the size of a car, the blue whale is the largest creature to ever exist on the planet.
11.More than 3.5 billion people depend on the oceans for food. In 20 years, experts say that number could go all the way up to seven billion.
12.Ever swallow seawater? Then chances are you're ingesting tens of thousands of zooplankton, which are tiny little ocean bugs.
13.The pressure at the deepest point of the ocean is just as heavy as one person trying to lift 50 jumbo jets.
14.Antarctica has as just as much ice as the Atlantic Ocean has water.
15.A lot of deep-sea fish have both male and female sex organs. And some of them even have the ability to change their sex organs during their lifetimes.