mesopelagic
Posted inAtmospheres, Climate, Weather, Away Teams & Field Reports, Biochemistry & Organic Chemistry, Biogeochemical Cycles & Geobiology, Biophysics, Biosignatures & Paleobiology, Exploration Gear & Tech, Extremeophiles and Extreme Environments, Habitable Zones, Press Release, ROVs/Submersibles/Diving, Water/Hycean Worlds & Oceanography

Ocean World Update: Deep-sea Discovery Shines Light On Life In The Twilight Zone

by Keith Cowing

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 […]

Posted inBiochemistry & Organic Chemistry, Gaia - Planetary Perspectives, Genomics, Proteomics, Bioinformatics, Habitable Zones, Microbiology & Virology, Status Report, Water/Hycean Worlds & Oceanography

Urea Assimilation and Oxidation Supports the Activity of a Phylogenetically Diverse Microbial Community in the Dark Ocean

by Keith Cowing

Urea is hypothesized to be an important source of nitrogen and chemical energy to microorganisms in the deep sea; however, direct evidence for urea use below the epipelagic ocean is […]

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