The Amazon River accounts for about 20% of all fresh water discharged into the world's oceans.

Somewhere between 50% and 80% of earth's living organisms are in the ocean.

Fact #2593 · Ocean

The Great Barrier Reef has experienced multiple mass bleaching events since 1998 as sea temperatures rise.

Fact #5201 · Ocean

The Arctic Ocean may be ice-free in summer within decades, creating new shipping routes and accelerating warming.

Fact #5218 · Ocean

Deep-sea fish like the barreleye have transparent heads and tubular eyes that can rotate to face upward.

Fact #5104 · Ocean

About 71% of Earth's surface is covered by water, but 97.5% of that is saltwater.

Fact #4269 · Ocean

Some fish use countershading to camouflage in water.

Fact #896 · Ocean

Deep-sea pressure at the Mariana Trench is over 1,000 times atmospheric pressure at sea level.

Fact #5128 · Ocean

Marine iguanas in the Galapagos are the only ocean-going lizards in the world.

Fact #5145 · Ocean