The ocean contains approximately 97% of all water on Earth.

The Nile Delta is sinking — it's being weighed down by sediment and eroded by rising seas.

Fact #3913 · Ocean

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

Fact #2341 · Ocean

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

Fact #2560 · Ocean

You are more likely to die from heart disease than any other cause.

Fact #2919 · Ocean

Sea turtles can migrate thousands of miles between feeding and nesting areas.

Fact #1252 · Ocean

Prehistoric oceans had different currents than today.

Fact #740 · Ocean

Many deep-sea animals lack strong pigmentation.

Fact #1409 · Ocean

The Mariana Trench reaches depths of nearly 36,000 feet.

Fact #1388 · Ocean