The longest mountain range on Earth is the Mid-Ocean Ridge, stretching over 40,000 miles across the ocean floor.

Penguins use their flippers to propel themselves underwater.

Fact #1238 · Ocean

There are more atoms in a glass of water than glasses of water in all Earth's oceans.

Fact #2341 · Ocean

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

Fact #575 · Ocean

Sea horses swim upright rather than horizontally.

Fact #446 · Ocean

Coral reefs are built by tiny animals called coral polyps.

Fact #654 · Ocean

A sea lion can dive hundreds of feet underwater.

Fact #482 · Ocean

Humpback whales sing songs that evolve over time — males across an ocean basin gradually adopt the same new melody.

Fact #3859 · Ocean

Coral reefs are formed by tiny marine animals called polyps.

Fact #98 · Ocean