The ocean contains an estimated 3 million shipwrecks.

The leafy sea dragon is so well camouflaged it was not studied alive until the 1990s.

Fact #5135 · Ocean

The world's longest coral reef system, the Great Barrier Reef, is visible from space.

Fact #4773 · Ocean

More than 80% of the world's oceans remain unmapped and unexplored.

Fact #4284 · Ocean

The Pacific Ocean contains thousands of islands.

Fact #200 · Ocean

The ocean contains structures larger than mountain ranges.

Fact #1796 · Ocean

Sea horses swim upright rather than horizontally.

Fact #446 · Ocean

The deep-ocean zone below 1,000 m is called the midnight zone — no sunlight reaches it.

Fact #5138 · Ocean

Noise pollution from ships disrupts whale communication over entire ocean basins.

Fact #5219 · Ocean