Completion of the intervention of the Ephorate of Underwater Antiquities and its partners in the shipwrecks of Alonnisos and Pagasitikos within the framework of the European project BLUEMED In October 2018 a very significant phase of the European project BLUEMED has been finally completed. The project has started in November 2016 and is expected to end in October 2019. Its scope is to study internationally for the first time the optimum and best practices for the protection and promotion of the underwater cultural heritage and more specifically the operation of the underwater accessible archaeological sites in ancient shipwrecks. At the same time, the project will protect and exploit the enormous underwater natural wealth and biodiversity of the Mediterranean. More specifically, the first in situ intervention was implemented by the Ephorate of Old Antiquities and its partners from Cyprus (Oceanography Center University of Cyprus), from Croatia University of Zagreb (School of Electrical Engineering & Computing) and from Italy University of Calabria (Department of Mechanical, Energy & Management Engineering) in the selected sites to be announced as accessible, based on the Documents issued by the Ministry of Culture and Sports DAPK/DIPKA/ΤPΚΑΧΜΑΕ/F53/12387/6960/772/240/19-1-2015(FEK119/Β/21-1-2015) concerning the shipwrecks of Alonnisos and Pagasitikos Bay. Highly significant was the support from the Region of Thessaly, who is also the Coordinator of the 14 in total partners of the Project, as well as the contribution of the local diving centers. In the period between 28/9/2018 and 15/10/2018 specialized teams from the Ephorate of Underwater Antiquities implemented underwater autopsies, cleansing works and inspections in the selected pilot sites of Peristera located at Alonissos at Western Pagasitikos on the context of the European project, in which the Ephorate participates as partner. Main target of these works both in the classical wreck of Peristera situated in Alonissos as well as in the areas of Kikinthos, Cape Telegraphos and Cape Glaros was to initially to delimit and define the "microregions" of the monuments, corresponding to the route of the visit, to document their current situation, to identify points of interest for visitors / divers and to clean the sites from any waste and modern interventions. In total, the works of the Ephorate of the Underwater Antiquities aimed at preparing the sites for the development of three-dimensional surveys of the wrecks and the geomorphology of the seabed, a project being implemented by the University of Calabria (Department of Mechanical,