Certain marine mammals have thick blubber for insulation.

Certain whales migrate thousands of miles annually.

Fact #413 · Ocean

Some fish build intricate sand nests.

Fact #436 · Ocean

Sea otters wrap themselves in kelp to stay anchored while sleeping.

Fact #1267 · Ocean

The Pacific Ocean contains thousands of islands.

Fact #200 · Ocean

There are deep ocean trenches deeper than Mount Everest is tall.

Fact #2273 · Ocean

The ocean contains structures larger than mountain ranges.

Fact #2013 · Ocean

The deep-ocean zone below 1,000 m is called the midnight zone — no sunlight reaches it.

Fact #5138 · Ocean

Certain fish clean parasites from larger fish.

Fact #422 · Ocean