Bioluminescent bays in Puerto Rico and the Maldives glow blue when disturbed — caused by dinoflagellates.

The ocean contains structures larger than mountain ranges.

Fact #1832 · Ocean

Some prehistoric marine reptiles hunted in ancient oceans.

Fact #686 · Ocean

The deep ocean remains largely unexplored by humans.

Fact #1416 · Ocean

The ocean contains structures larger than mountain ranges.

Fact #2202 · Ocean

The ocean contains structures larger than mountain ranges.

Fact #2033 · Ocean

There are places in the ocean where pressure is over 1,000 times greater than at sea level.

Fact #2486 · Ocean

The Great Barrier Reef is the largest coral reef system in the world.

Fact #13 · Ocean

There are places in the ocean deeper than the height of Mount Everest.

Fact #2457 · Ocean