Over 71% of the Earth's surface is covered by oceans, but only about 5% of the ocean has been explored. Nearly 50% of the known species on the planet live in the ocean, but scientists discover new species in nearly every deep sea exploration expedition.
The ocean is vital to the health of the planet. Nearly 50% of the oxygen in the atmosphere is produced by tiny plants in the ocean called phytoplankton.
While the ocean may seem like just a vast expanse of blue, there is a thriving ecosystem full of abundant and diverse life just below the surface.