Because of the climate problem, life in the ocean's 'twilight zone' may become extinct.

The ocean’s mesopelagic zone, also known as the “twilight zone”, is located between 656 feet and 3,280 feet (200 meters to 1,000 meters) below the surface. It is home to billions of metric tons of organic matter and some of Earth’s most stunning biodiversity, despite being beyond the reach of sunlight. New research warns that the climate crisis could reduce life in the twilight zone between 20% and 40% by the end of the century, and if greenhouse gas emissions continue, the ocean region’s life could be severely depleted within 150 years. Recovery may not be possible for thousands of years.