The ocean's twilight zone is deep, dark, and—according to new research—iron deficient. No sunlight reaches this region 200 to 1,000 meters below the sea surface, where levels of iron ...

The deep ocean, referred to as the “twilight zone”, is enormously mysterious ... when they were at sea in Iceland in June on the project's first cruise. Skies were clear and the water ...

However, a fraction of organic matter made in the euphotic zone escapes remineralization and sinks into the ocean’s interior, delivering organic substrates that fuel the metabolism of deep-sea ...

Many exist in the twilight zone, the part of the ocean from 500 to 1,000 metres deep ... Even in one organism bioluminescence can have multiple uses. In the deep sea, light is used to attract prey or ...

Oarfish, with their long, ribbon-like bodies, are among the most elusive and mysterious creatures of the deep sea.