Whale sharks are the largest fish in the world, growing up to 40 feet long, but they eat only tiny plankton.

Some deserts were once oceans.

Fact #2661 · Ocean

In 1962, a U.S. submarine nearly launched a nuclear torpedo during the Cuban Missile Crisis.

Fact #788 · Ocean

Octopuses solve mazes.

Fact #2571 · Ocean

The Great Barrier Reef supports thousands of marine species.

Fact #186 · Ocean

Dolphins give each other names — they use unique whistle signatures to identify individuals.

Fact #3518 · Ocean

The Arctic fox changes fur color with the seasons.

Fact #373 · Ocean

A humpback whale’s song can last for hours.

Fact #549 · Ocean

Coral reefs are formed by tiny marine animals called polyps.

Fact #98 · Ocean