Christopher R German, Woods Hole Oceanographic Institution, Woods Hole, MA, United States, Andrew Bowen, WHOI, Woods Hole, MA, United States, Michael Jakuba, Woods Hole Oceanographic Inst., Woods Hole, MA, United States, Antje Boetius, Alfred Wegener Institute Helmholtz-Center for Polar and Marine Research Bremerhaven, Bremerhaven, Germany, Vera S N Schlindwein, Alfred Wegener Institute, Bremerhaven, Germany, Stefan Bünz, CAGE — Centre for Arctic Gas Hydrate, Environment and Climate, Department of Geosciences, UiT The Arctic University of Norway, Tromsø, Norway, Eva Ramirez Llodra, Norwegian Institute for Water Research, Oslo, Norway and Cruise Research Teams for Polarstern PS86 (2014), Polarstern PS101 (2016) & Hacon Frinatek KPH708 (2019)