Acknowledgments
This work was supported by the French Ministry in charge of Environment (Ministère de la Transition Ecologique / Direction de l’Eau et de la Biodiversité). This study was funded by the European project H2020 SUMMER “Sustainable Management of Mesopelagic Resources” (grant agreement ID: 817806). The authors are grateful to the crew of the R/V Thalassa (https://doi. Org/10.18142/8) and to all scientists and cruise leaders who allowed the data collection during the EVHOE scientific surveys. We finally thank Benoît Lebreton and Gaël Guillou from the “Plateforme de Spectrométrie Isotopique ” of the LIENSs laboratory (UMR 7266, CNRS – La Rochelle University) for their assistance during stable isotope analyses.