A group of jellyfish is called a smack, bloom, or swarm.

Some marine animals use bioluminescence to produce light.

Fact #208 · Ocean

There are underwater waterfalls caused by differences in water density.

Fact #2442 · Ocean

Some dolphins sleep with one half of their brain at a time.

Fact #564 · Ocean

The Earth's oceans are interconnected.

Fact #314 · Ocean

Dolphins use echolocation to navigate and hunt underwater.

Fact #12 · Ocean

Certain whales migrate thousands of miles annually.

Fact #413 · Ocean

The Pacific Ocean contains numerous coral atolls.

Fact #315 · Ocean

Sea lions can rotate their rear flippers forward to walk on land.

Fact #1245 · Ocean