Phys.org  July 22, 2024 Deep-seafloor organisms consume oxygen, which can be measured by in situ benthic chamber experiments. An international team of researchers (UK, Germany, USA – Boston University, University of Minnesota, Northwestern University) conducted experiments at the polymetallic nodule-covered abyssal seafloor in the Pacific Ocean in which oxygen increased over two days to more than three times the background concentration. Through situ incubations they attributed the increase to the polymetallic nodules. Given high voltage potentials (up to 0.95 V) on nodule surfaces, they hypothesized that seawater electrolysis might have contributed to this dark oxygen production… read more. Open Access TECHNICAL […]