Some dolphins exhibit playful behavior even without reward.

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

Fact #13 · Ocean

Octopuses have rectangular pupils that give them nearly 360-degree vision.

Fact #3844 · Ocean

The vampire squid can turn itself inside out as a defense mechanism.

Fact #1385 · Ocean

Steve Irwin died after being pierced by a stingray barb.

Fact #3201 · Ocean

Some dolphins sleep with one half of their brain at a time.

Fact #564 · Ocean

Sea horses swim upright rather than horizontally.

Fact #446 · Ocean

A squid can propel itself rapidly by jetting water.

Fact #417 · Ocean

The original name for the search engine Google was 'BackRub.'

Fact #3956 · Ocean