Accumulative coasts in the various basins of the World Ocean are composed of bulk sediments of very different lithological and granulometric composition, and their formation is strongly influenced by the hydrodynamic conditions of the particular basin. The geological evolution of accumulative coasts in micro-tidal basins (Baltic, Azov and Black Seas, and certain areas of the Atlantic Ocean) is therefore fundamentally different from that of accumulation coasts whose formation is influenced by tidal hydrodynamic conditions. The thesis aims to study the geological structure and evolution of the accumulation coasts of micro-tidal basins located in different geological-tectonic conditions (neo-tectonically stable areas and areas influenced by glacio-isostatic adjustment) and composed of sediments with different lithological and granulometric compositions. Thus, the studies will cover shores with different lithological-granulometric compositions: sandy (south-eastern Baltic Sea), detrital (northern Black Sea, Sea of Azov), composed by gravel-pebble sediments (north-eastern Baltic Sea, Svalbard archipelago in the Atlantic Ocean). Accumulation coasts are the most vulnerable to abrasion, so their stability and resistance to erosion, which will also be analysed in the thesis, is an important practical issue for modern coastal protection, especially in the context of climate change and the increasing frequency of storm surges and rising water levels. The research will build on the wealth of factual material already collected (Black Sea and Azov coasts, north-eastern Baltic Sea) and on data from ongoing national and international projects (south-eastern Baltic Sea, Svalbard archipelago). It is planned to prepare and defend the thesis on the basis of 4 high-level scientific publications with a citation index in the Clarivate Analytics Web of Science database.