Daniela Zeppilli, IFREMER, EEP-LEP, Plouzané, France, Mauricio Shimabukuro, IFREMER, REM/EEP/LEP, Plouzané, France, Daniel Leduc, National Institute of Water and Atmospheric Research, Wellington, New Zealand, Matthias Zabel, Univ Bremen, Bremen, Germany, Ronnie N Glud, University of Southern Denmark, Department of Biology, Odense, Denmark and Frank Wenzhofer, Alfred Wegener Institute Helmholtz-Center for Polar and Marine Research Bremerhaven, HGF-MPG Group for Deep Sea Ecology and Technology, Bremerhaven, Germany