Some volcanoes erupt underwater.

The Mariana Trench reaches depths of nearly 36,000 feet.

Fact #1388 · Ocean

The Cambrian period introduced many early marine animals.

Fact #746 · Ocean

The anglerfish uses a bioluminescent lure to attract prey in the dark ocean depths.

Fact #1383 · Ocean

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

Fact #1245 · Ocean

There are more atoms in a glass of water than glasses of water in all Earth's oceans.

Fact #2341 · Ocean

You are more likely to die from heart disease than any other cause.

Fact #2919 · Ocean

The giant squid lives in deep ocean waters.

Fact #659 · Ocean

The Channel Tunnel required underwater tunneling through chalk marl.

Fact #1536 · Ocean