Data set used in https://doi.org/10.1016/j.jmarsys.2011.11.025 Plankton net : Vertical WP2 (200µm, aperture O.25 m2). Geographical Positions, time and the depth of net profils are indicated in the csv file. Zooplankton samples were processes by using Zoooscan and next validated with zooprocess. Two fractions ("_a" and "_b") were made for each sample. Validated images are provided with their pid files (*tar file). Parameters (ESD  for Equivalent spherical Diameter per cluster, slope of the NBSS - Normalized Biomass Size spectrum, number of images per zooplankton group...) are also provided in the CSV file. All processing details are provided in the related publication.