The Great Barrier Reef has experienced 5 mass bleaching events since 1998 — 4 of them since 2016.

Only about 5% of the ocean has been explored by humans.

Fact #2776 · Ocean

The deepest ocean trench is the Mariana Trench.

Fact #907 · Ocean

Some fish build intricate sand nests.

Fact #436 · Ocean

The ocean contains structures larger than mountain ranges.

Fact #1832 · Ocean

The Mariana Trench is so deep that Mount Everest could be submerged in it with over a mile to spare.

Fact #4253 · Ocean

Lake Malawi contains more species of fish than any other lake in the world.

Fact #4799 · Ocean

Some deep‑sea creatures have never seen sunlight in millions of years.

Fact #2237 · Ocean

Prehistoric oceans had different currents than today.

Fact #740 · Ocean