Satellite data reveals 21% of oceans have darkened, affecting photic zones and marine life. Researchers warn of severe ...

The ocean twilight zone, often called the mesopelagic zone, lies between 200 and 1,000 meters below the surface. Sunlight grows faint here, creating a dim, perpetual dusk.

The oceans are losing their light – and with it, possibly their life. A new study reveals more than 20% of the Earth's oceans, an area larger than Asia, has darkened over the last two decades. These ...

More than one-fifth of the global ocean—an area spanning more than 75 million sq km—has been the subject of ocean darkening over the past two decades, according to new research.

If the photic zone is reducing by around 50m in large swathes of the ocean, animals that need light will be forced closer to the surface where they ... Assessing changes in the ocean's photic zones.

Is the ocean getting darker? New research found 21% of the global ocean had experienced a reduction in the depth of its lit zones, which are home to 90% of all marine life, during the past 20 years ...

Study by Plymouth researchers shows 21 per cent of the ocean has dimmed in two decades, endangering life dependent on natural light.

Deep-sea discovery shines light on life in the twilight zone. ScienceDaily . Retrieved June 2, 2025 from www.sciencedaily.com / releases / 2024 / 09 / 240925123650.htm ...

Dark oxygen is produced in the ocean even without light. ... Why such 'dead zones' persist for decades is still unknown," Franz Geiger, one of the authors of the study, said to CNN.

According to Davies, the majority of marine life lives in the photic zones of the ocean, which is where sufficient light penetrates to stimulate photobiological processes.