Photo Credit: NASA Oxygen-starved ocean “dead zones,” where fish and animals cannot survive, have been expanding in the open ocean and coastal waters for several decades as a result of human ...

Researchers descended more than 35,700 feet (10,900 meters) below sea level to collect biological samples that revealed ...

Could lumpy metallic rocks in the deepest, darkest reaches of the ocean be making oxygen in the absence of sunlight? Some ...

Deep-sea fish thrive in extreme pressure, darkness, and pollution, revealing new survival mechanisms and threats.

Researchers enlist animals' help to pierce the mysteries of the twilight zone of the sea: 'It was really exciting' first appeared on The Cool Down.

An exploratory expedition describes two deep-sea, low oxygen ecosystems in the Red Sea, including some surprising fish.

The open ocean’s twilight zone, a vast deep ecosystem rich in fish biomass, is poorly understood because it is expensive and challenging for humans to reach its depths 200–1000 meters (660 ...