The world's longest sea bridge is the Hong Kong–Zhuhai–Macau Bridge at 55 km.

Heart disease is the leading cause of death globally.

Fact #2828 · Ocean

Sea otters hold hands while sleeping to avoid drifting apart.

Fact #364 · Ocean

The Pacific Ocean contains numerous coral atolls.

Fact #315 · Ocean

Some deep‑sea fish create their own light.

Fact #2475 · Ocean

The Pacific Ocean has the most islands of any ocean.

Fact #327 · Ocean

Prehistoric coral reefs were similar to modern reefs.

Fact #707 · Ocean

A humpback whale’s song can last for hours.

Fact #549 · Ocean

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

Fact #788 · Ocean