The project continued the geophysical research in the submersed areas adjacent to the archaeological sites located downstream of the Drobeta Fortress (Castravita, Turis, Sucidava, Zimnicea, etc.) and was based on the experience of previous studies conducted in the same area. The main objective was to make a very detailed geophysical investigation of submerged areas belonging to several archaeological sites on the Danube, upstream of Sulina (Sacidava, Altenum, Axiopolis, Dinogetia, Halmyris, Aegyssus, Enisala and Argamum), which, from the historically and archaeologically points of view, virtually covers all the epochs of the ancient period. Geophysical studies conducted in the submersed area have been useful for future on land archaeological excavations. In the case of sites along the Danube, the geophysical works (georadar, magnetometric and electrometric) have aimed to identifying the sources of anthropogenic pollution of the soil and the subsoil. In order to exclude as many of the anomalies generated by anthropogenic polluting factors (buried constructions of recent age, pipelines, oil polluted areas, etc.), it was necessary to carry out research using PotentQ software, 3D and 2D models corresponding to the anomalies generated by existing pollutant factors in the archaeological sites. The proposed methods for geophysical research in the submersed area were the magnetometric, seismoacoustic (side sonar scan) and electrometric method, respectively. Geophysical studies took place in the fluvial and lacustrine areas adjacent to each archaeological site. The first works were topographic, with the help of which the networks for the acquisition of field data were transposed into the field, the activity being also attended by archaeologists. Data acquisition works started from the topographic support network of each site. Geophysical mapping started with bathymetric measurements, followed by magnetometric measurements, and ended with electrometric work. Prior to this, magnetic susceptibility studies were carried out on rock, brick, mortar samples, etc., necessary to calibrate the magnetometric method. After conducting these studies, diving into areas of interest could be done to mark in-situ, film and photograph any vestiges discovered.