Dolphins have been documented using sea sponges as tools to protect their snouts while foraging.

Dolphins can recognize themselves in mirrors, a sign of self-awareness.

Fact #2560 · Ocean

Whales are mammals and must breathe air.

Fact #265 · Ocean

Some deep-sea jellyfish emit flashes of light when disturbed.

Fact #1396 · Ocean

The deep ocean floor is covered with fine sediment known as ooze.

Fact #1422 · Ocean

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

Fact #3844 · Ocean

The Pacific Ocean contains thousands of islands.

Fact #200 · Ocean

Penguins have excellent underwater vision.

Fact #1288 · Ocean

The Pacific Ocean contains numerous coral atolls.

Fact #315 · Ocean