The zooplankton dataset contains samples collected during 1961-1970, from different stations, from the Romanian Black Sea waters. Samples were collected from different depths, mainly monthly, covering in this way all seasons (spring, summer, autumn,winter). All samples were collected using the Baskakova net, with an opening of 36 cm diameter. Zooplankton samples were analyzed both from quantitative (density and biomass) and qualitative (list of species) point of view.