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

There are more atoms in a glass of water than glasses of water in all Earth's oceans.

Fact #2341 · Ocean

The immortal jellyfish can revert back to its juvenile state after reaching maturity, theoretically living forever.

Fact #3517 · Ocean

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

Fact #1396 · Ocean

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

Fact #2593 · Ocean

A giant squid lives in deep ocean waters.

Fact #522 · Ocean

Some volcanoes erupt underwater.

Fact #852 · Ocean

Deep-sea creatures often have bioluminescent organs for communication.

Fact #884 · Ocean

Some volcanoes can erupt underwater.

Fact #2624 · Ocean