Bioluminescence is estimated to occur in 76% of all ocean species.

The ocean covers more than 70 percent of Earth's surface.

Fact #657 · Ocean

The ocean contains structures larger than mountain ranges.

Fact #2074 · Ocean

The ocean contains structures larger than mountain ranges.

Fact #1773 · Ocean

Some fish use countershading to camouflage in water.

Fact #896 · Ocean

Some fish can change color to blend with their surroundings.

Fact #392 · Ocean

The ocean contains structures larger than mountain ranges.

Fact #2202 · Ocean

The world's longest mountain chain is actually underwater — the Mid-Ocean Ridge stretches over 65,000 km.

Fact #4296 · Ocean

A whale shark is the largest fish in the ocean.

Fact #462 · Ocean