This dataset is the result of the monitoring performed with regards to the European Water Framework Directive for the coastal areas (1 mile zone). The following data is included:- Species composition, abundance and biomass of the macrobenthos of three communities (Abra alba, Macoma balthica, Nephtys cirrosa). - Phytoplankton biomonitoring, identification and enumeration of marine phytoplankton samples, with special attention to Phaeocystis.