SUMMER “Sustainable Management of Mesopelagic Resources". The project is part of the H2020 Program of "Food security, sustainable agriculture, marine and maritime research and bioeconomy" and covers ecological aspects of mesopelagic communities. A fundamental part of this research lies in obtaining samples of plankton and micronekton from the mesopelagic zone to the epipelagic layers, acoustic records in the same places, and information on the hydrographic parameters throughout the water column. The survey will have 2 main study sites in eastern Iberia- western Mediterranean sea (oligotrophic region), and 2 more in western Iberia (productive region). In each of the 4 sites repeated samples will be performed day and night during 3 journeys. From Cape San Vicente to Lisbon latitude, the work will focus on the location of Eddies of Mediterranean water (MEDIS), therefore CTDs will be the priority. To study the influence on these MEDIS on mesopelagic populations, plankton hauls will be also performed in particular locations. We foresee to spend at least 3 days per study site. Two days (day and night) will be devoted to sample micronekton (small fishes, crustaceans, cephalopods etc) and mesozooplankton in the water column (from the mesopelagic to the epipelagic zone). Then, to obtain more accurate view of the migratory populations, one of the journeys will focus on the study of surface layer

SUMMER Cruise (29SG20200929) carried out on the Research Vessel Sarmiento de Gamboa in 2020