Coral reefs are expected to decline by 70–90% if global temperatures rise 1.5°C above pre-industrial levels.

Octopuses solve mazes.

Fact #2571 · Ocean

Dolphins use signature whistles that function like names.

Fact #1313 · Ocean

The U.S. once detonated nuclear weapons underwater near its own ships for testing.

Fact #2758 · Ocean

The Earth's oceans are interconnected.

Fact #314 · Ocean

Certain marine mammals have thick blubber for insulation.

Fact #877 · Ocean

Penguins have excellent underwater vision.

Fact #1288 · Ocean

The immortal jellyfish (Turritopsis dohrnii) can revert to its juvenile state after reaching adulthood.

Fact #3244 · Ocean

Sea cucumbers can expel internal organs as a defense mechanism.

Fact #350 · Ocean