All Helmholtz Centre for Polar and Marine Research articles
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NewsFrozen, but not sealed: algal traces reveal that Arctic Ocean remained open to life during ice ages
For years, scientists have debated whether a giant thick ice shelf once covered the entire Arctic Ocean during the coldest ice ages. Now a new study challenges this idea as the research team found no evidence for the presence of a massive ~1km ice shelf. Instead, the Arctic Ocean appears to have been covered by seasonal sea ice.
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NewsDeep-sea corals are home to previously unknown bacteria with extremely small genomes
Scientists have discovered two highly unusual bacterial species in the tissue of deep-sea corals from the Gulf of Mexico. The previously unknown coral symbionts have an extremely reduced genome and lack the ability to obtain energy from carbohydrates.
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NewsBacteria flourish in plumes of deep ocean volcanoes
Deep down in the ocean at tectonic plate boundaries, hot fluids rise from so-called hydrothermal vents. The fluids are devoid of oxygen and contain large amounts of metals such as iron, manganese or copper. Some may also transport sulphides, methane and hydrogen. Source: HACON cruise 2021, REV Ocean ...