The Cambrian period introduced many early marine animals.

Some volcanoes can erupt underwater without anyone noticing.

Fact #2248 · Ocean

Penguins use their flippers to propel themselves underwater.

Fact #1238 · Ocean

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

Fact #2341 · Ocean

The vampire squid feeds primarily on marine snow.

Fact #1420 · Ocean

Sea otters use rocks consistently as tools.

Fact #1304 · Ocean

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

Fact #2593 · Ocean

The Pacific Ocean contains thousands of islands.

Fact #200 · Ocean

The sea turtle’s streamlined shell aids in efficient swimming.

Fact #903 · Ocean