The Pacific giant octopus can open a childproof medicine bottle — tested by researchers.

The Mariana Trench is the deepest known part of Earth's oceans.

Fact #109 · Ocean

There are underwater waterfalls caused by differences in water density.

Fact #2442 · Ocean

A blue whale consumes vast amounts of krill daily.

Fact #478 · Ocean

Public health sanitation reforms reduced disease outbreaks.

Fact #1210 · Ocean

The Great Barrier Reef is the largest coral reef system in the world.

Fact #13 · Ocean

Some seals can sleep underwater by surfacing periodically.

Fact #1290 · Ocean

A jellyfish moves by pulsing its bell-shaped body.

Fact #506 · Ocean

Somewhere between 50% and 80% of earth's living organisms are in the ocean.

Fact #2593 · Ocean