The Caspian Sea is the world's largest inland body of water and is classified as a lake despite its salt water.

The deep-sea environment is near freezing in temperature.

Fact #1419 · Ocean

Some whales can hold their breath for over an hour.

Fact #179 · Ocean

A humpback whale’s song can last for hours.

Fact #549 · Ocean

Some deep-sea fish have expandable stomachs to consume rare prey.

Fact #1407 · Ocean

The Earth's tilt causes seasonal changes.

Fact #144 · Ocean

A googol is the number 1 followed by 100 zeros — the search engine Google is named after it, misspelled.

Fact #3598 · Ocean

Certain octopus species are known for their intelligence.

Fact #495 · Ocean

The 2004 Indian Ocean tsunami was triggered by a massive undersea earthquake.

Fact #807 · Ocean