Sea otters use rocks consistently as tools.

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

Fact #1252 · Ocean

The Great Barrier Reef is the largest coral reef system in the world.

Fact #13 · Ocean

Octopuses can open jars to access food inside.

Fact #1298 · Ocean

In 1962, a U.S. submarine nearly launched a nuclear torpedo during the Cuban Missile Crisis.

Fact #788 · Ocean

A single coral colony can consist of thousands of tiny animals.

Fact #367 · Ocean

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

Fact #3913 · Ocean

There are underwater lakes on Earth.

Fact #1685 · Ocean

Penguins have excellent underwater vision.

Fact #1288 · Ocean