The ocean floor has mountain ranges, volcanoes, and trenches that rival any landscape found on land.

There are deep ocean creatures that glow.

Fact #2292 · Ocean

Some whales communicate across vast distances underwater.

Fact #228 · Ocean

Phytoplankton populations have declined by about 40% since 1950, threatening the marine food chain.

Fact #5230 · Ocean

The ocean contains structures larger than mountain ranges.

Fact #1796 · Ocean

The mimic octopus can imitate other sea creatures.

Fact #355 · Ocean

Plankton form the base of many marine food chains.

Fact #663 · Ocean

The Dead Sea is one of the saltiest bodies of water on Earth.

Fact #266 · Ocean

There are places in the ocean where pressure is over 1,000 times greater than at sea level.

Fact #2486 · Ocean