Cold seep foraminifera have attracted considerable attention as they provide valuable insights into the study of cold seeps. This provides a comprehensive overview manifestations in environments and methane seepage activities. Certain taxa benthic foraminifera, such Uvigerina , Bolivina Bulimina Chilostomella Globobulimina Nonionella Melonis Epistominella Cibicidoides Globocassidulina are known...

The 3D seismic data acquired in the central Qiongdongnan Basin, northwestern South China Sea, reveal presence of shallow gas hydrate, free gas, and focused fluid flow study area, which are indicated by multiple anomalies, including bottom simulating reflectors, polarity reverses, pulldowns, minor faults, chimneys intensively emplaced within strata. A new cold seep is also discovered at approxim...

Microbial community structures in methane seep sediments in the Nankai Trough were analyzed by tag-sequencing analysis for the small subunit (SSU) rRNA gene using a newly developed primer set. The dominant members of Archaea were Deep-sea Hydrothermal Vent Euryarchaeotic Group 6 (DHVEG 6), Marine Group I (MGI) and Deep Sea Archaeal Group (DSAG), and those in Bacteria were Alpha-, Gamma-, Delta-...

Early ontogenetic adaptations reflect the evolutionary history of a species. To understand the evolution of the deep-sea fauna and its adaptation to high pressure, it is important to know the effects of pressure on their shallow-water relatives. In this study we analyse the temperature and pressure tolerances of early life-history stages of the shallow-water species Mytilus edulis. This species...

Despite a number of studies in areas of focused methane seepage, the extent of transitional sediments of more diffuse methane seepage, and their influence upon biological communities is poorly understood. We investigated an area of reducing sediments with elevated levels of methane on the South Georgia margin around 250 m depth and report data from a series of geochemical and biological analyse...

Anaerobic methanotrophic archaea have recently been identified in anoxic marine sediments, but have not yet been recovered in pure culture. Physiological studies on freshly collected samples containing archaea and their sulfate-reducing syntrophic partners have been conducted, but sample availability and viability can limit the scope of these experiments. To better study microbial anaerobic met...