The ocean might be deep and mysterious, but not all of its life is bathed in darkness. Close to 90% of marine ecosystems ...

The vast, sunlit waters of the ocean’s surface, known as the photic zone, nurture 90% of marine life. Sunlight and moonlight ...

Over 20% of the global ocean has darkened in the past two decades, shrinking critical light zones that support marine life.

The photic zone, where sunlight penetrates and sea creatures survive, is considerably shallower in most places now.

The experts say a fifth of the world's ocean has become darker in the past 20 years, impacting marine life and the air we ...