Coral reefs cover less than 1% of the ocean floor but support about 25% of all marine species.

The Earth's crust is thinner beneath oceans.

Fact #127 · Ocean

The Earth's poles experience extreme seasonal variations in sunlight.

Fact #207 · Ocean

Glacial periods caused sea levels to drop significantly.

Fact #748 · Ocean

Some prehistoric marine reptiles hunted in ancient oceans.

Fact #686 · Ocean

Dolphins can recognize themselves in mirrors, a sign of self-awareness.

Fact #2560 · Ocean

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

Fact #2486 · Ocean

Billy Mays died from heart disease shortly after a flight.

Fact #3198 · Ocean

Prehistoric coral reefs were similar to modern reefs.

Fact #707 · Ocean