Penguins use their flippers to propel themselves underwater.

A sea turtle can navigate back to its birthplace decades later.

Fact #575 · Ocean

Dolphins use signature whistles that function like names.

Fact #1313 · Ocean

The Great Barrier Reef is home to thousands of marine species.

Fact #76 · Ocean

Octopuses have rectangular pupils that give them nearly 360-degree vision.

Fact #3844 · Ocean

Some prehistoric marine reptiles hunted in ancient oceans.

Fact #686 · Ocean

Some whales communicate across vast distances underwater.

Fact #228 · Ocean

The Earth's oceans are interconnected.

Fact #314 · Ocean

Some dolphins sleep with one half of their brain at a time.

Fact #564 · Ocean