The Arctic Ocean may be ice-free in summer within decades, creating new shipping routes and accelerating warming.

The Great Barrier Reef supports thousands of marine species.

Fact #186 · Ocean

Trilobites lived in ancient oceans long before dinosaurs.

Fact #692 · Ocean

There are underwater lakes on Earth.

Fact #1685 · Ocean

The largest living structure on Earth is the Great Barrier Reef.

Fact #2632 · Ocean

The world's longest mountain chain is actually underwater — the Mid-Ocean Ridge stretches over 65,000 km.

Fact #4296 · Ocean

The ocean contains structures larger than mountain ranges.

Fact #1728 · Ocean

The ocean contains structures larger than mountain ranges.

Fact #2123 · Ocean

The Great Barrier Reef has experienced multiple mass bleaching events since 1998 as sea temperatures rise.

Fact #5201 · Ocean