Data from a multidisciplinary survey of benthic and pelagic ecosystems in the coastal area of the Bulgarian Black Sea within the BS BRIDGE project activities of IBER-BAS. Data includes water column CTD profiles, profile measurements of oxygen concentrations, pH, turbidity, chl-a fluorescence,  as well as discrete depth sample measurements of concentrations of nutrients ( nitrates, nitrites, phosphates, total nitrogen, seston, chl-a). Sampling , sample and data analysis was carried out in the framework of the BRIDGE-BS Horizon project.