Oceanologia, the official journal of the Committee of Marine Research and the Institute of Oceanology of the Polish Academy of Sciences, is an international journal that publishes results of original research in the field of marine sciences with emphasis on the European seas. Manuscripts contributing, but not limited, to the understanding of properties and processes in the marine environment in the aspect of basic sciences: biology, chemistry, physics, ecology and geochemistry will be considered for publication. Special attention will be given to papers devoted to phenomena occurring in the marine environment in the zones characterized by: • gradients of properties (salinity, red-ox, temperature, light field, others), • phases boundaries both abiotic and biotic/abiotic (aqueous/solid, aqueous/gaseous, biotic/solid and biotic/aqueous), • marine-land boundary. We also encourage the submission of manuscripts dealing with multidisciplinary approaches to the investigated phenomena, as well as those devoted to manifestations of contemporary global issues e.g. climate warming and other global change-related phenomena, and/or describing possible and actual adaptations to threats brought by these changes. Preference will be given to manuscripts covering innovative research of global significance over those devoted to strictly local issues, and to papers contributing to the marine ecosystem functioning over strictly descriptive ones. Oceanologia also publishes special and thematic issues dedicated to specific subject areas and events. Prospective Guest Editors of potential special issues must contact the Editor-in-Chief first to check the subject and scope of the special issue. The issues 53(2011)–56(2014) were digitalized thanks to the financial support of the project Index Plus of the Polish Ministry of Science and Higher Education. All issues of the journal Oceanologia published since 2011 are available on ScienceDirect at http://www.sciencedirect.com/science/journal/00783234, archival issues published before 2011 can be accessed at http://www.iopan.gda.pl/oceanologia/issues.html. For any questions please contact [email protected].