Dolphins give each other names — they use unique whistle signatures to identify individuals.

Penguins use their flippers to propel themselves underwater.

Fact #1238 · Ocean

Public health sanitation reforms reduced disease outbreaks.

Fact #1210 · Ocean

Certain dolphins cooperate to herd fish in coordinated groups.

Fact #1301 · Ocean

The snowshoe hare changes fur color with the seasons for camouflage.

Fact #871 · Ocean

The compass improved navigation at sea.

Fact #1551 · Ocean

The giant squid lives in deep ocean waters.

Fact #659 · Ocean

The Earth's tilt is responsible for seasonal climate patterns.

Fact #222 · Ocean

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

Fact #76 · Ocean