The deep sea begins at about 200 meters below sea level, where light starts to diminish in a region called the twilight zone.

Given the extreme conditions of the hadal zone, scientists were surprised by ... in Earth’s last great unexplored frontier—the deep ocean.

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

Mass migration of life in the twilight zone — which can be found in the deepest parts of the ocean, between 650 feet deep and 3,300 feet deep — was first discovered in World War II ...

On April 24, President Trump signed an executive order promoting deep-sea mining in the US and international waters, touting ...

below sea level and collect hundreds of biological samples from the hadal zone in the Yap Trench, the Philippine Basin, and the Mariana Trench—the deepest ocean trench on Earth. Of the more than ...

If the U.S. wants to secure critical minerals it should invest in mining and processing facilities on home soil rather than ...

Researchers argue that expanding deep-sea exploration is vital to understanding and managing these marine habitats ...

Researchers say our understanding of Earth’s largest biome is based on a tiny, unrepresentative sample dominated by just a few countries.

Picture an ocean world so deep and dark it feels like another planet—where creatures glow and life survives under crushing pressure. This is the midwater zone, a hidden ecosystem that begins 650 ...

have conducted an extensive investigation into microbial ecosystems in the deep ocean hadal zone. Findings reveal an unprecedented level of taxonomic novelty, with 89.4% of identified microbial ...