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

Some deep-sea jellyfish emit flashes of light when disturbed.

Fact #1396 · Ocean

Prehistoric oceans had different currents than today.

Fact #740 · Ocean

The Atlantic Ocean is widening by about 2.5 cm per year as tectonic plates spread apart.

Fact #5124 · Ocean

Certain fish clean parasites from larger fish.

Fact #422 · Ocean

Certain fish live in symbiotic relationships with other species.

Fact #535 · Ocean

The Pacific Ocean is larger than all the Earth's landmasses combined.

Fact #3394 · Ocean

The sailfish is among the fastest fish in the ocean.

Fact #397 · Ocean

Some deep-sea creatures produce their own light through bioluminescence.

Fact #1391 · Ocean