Some prehistoric marine reptiles hunted in ancient oceans.

A sea lion can dive hundreds of feet underwater.

Fact #482 · Ocean

A polar bear's sense of smell can detect seals from over a kilometer away.

Fact #1240 · Ocean

Public health sanitation reforms reduced disease outbreaks.

Fact #1210 · Ocean

The Pacific Ocean contains numerous coral atolls.

Fact #315 · Ocean

The Cambrian period introduced many early marine animals.

Fact #746 · Ocean

A sea horse anchors itself using its tail.

Fact #514 · Ocean

The deep ocean is the largest habitat on Earth.

Fact #1405 · Ocean

Certain marine animals use camouflage to blend into coral reefs.

Fact #487 · Ocean