A whale's heart is so large that a small child could crawl through its arteries.

Certain fish can inflate their bodies to appear larger.

Fact #554 · Ocean

Over 90% of Earth's volcanic activity occurs underwater, along mid-ocean ridges.

Fact #4774 · Ocean

Some whales communicate across vast distances underwater.

Fact #228 · Ocean

The ocean contains structures larger than mountain ranges.

Fact #2202 · Ocean

A group of jellyfish is called a smack, a bloom, or a swarm.

Fact #5749 · Ocean

The Pacific Ocean is deeper on average than other oceans.

Fact #226 · Ocean

Some deep‑sea fish create their own light.

Fact #2475 · Ocean

Sea cucumbers can expel internal organs as a defense mechanism.

Fact #350 · Ocean