International cooperation is being developed on various grounds. Institute staff have been, from the very beginning of it's activities, involved in the work of the International Commission for Scientific Research of the Mediterranean (CIESMM). Vice President of CIESMM is always recruited from scientific workers of the Institute, and on many occasions, they were the presidents and deputies of various committees. Also, since the establishment of appropriate organizations, the Institute is cooperating with various United Nations agencies.
These are the General Fisheries Council for the Mediterranean (GFCM), Intergovernmental Oceanographic Commission (IOC), World Meteorological Organization (WMO), the Organization for Economic Cooperation and Development (OECD) and the United Nations Environment Program (UNEP). Bilateral cooperation exists in various projects and with the following countries: Italy, USA, Greece and Poland.
 | Aquamed: Aquaculture project funded by the European Commission Seventh Framework Programme. |  | SESAME : Southern European Seas: Assessing and Modelling Echosystem changes |
 | MEDAR – MEDATLAS II : Program for getting and safe storage of oceanographic data of the Mediterranean IOF – referral centre for Croatia |  | IODE : International Oceanographic Data and Information Excange (IODE), acting as a member of the Intergovernmental Oceanographic Commission of UNESCO (IOC) IOF – referral centre for Croatia |
 | SEA-SEARCH : Gateway for accesing European sea data and informations IOF – referral centre for Croatia |  | SIPAM : promote aquaculture. collect, organize and use local aquaculture data. IOF – referral centre for Croatia |
 | ADRIAMED : promote cooperative fishery and resource management between the countries of the Adriatic Sea IOF – coordination and referral centre for Croatia, Slovenia and Albania |  | ADRICOSM : integrated coastal zone management system in the Adriatic Sea |
 | EACE : East Adriatic Coastal Experiment |  | MEDITS : An international bottom trawl survey in the Mediterranean |
 | MAMA: Mediterranean network to Assess and upgrade Monitoring and forecasting Activity in the region |  | PELMON : Determination Of Small Pelagic Fish Echo-Surveying Zones In The Adriatic Sea |
 | DEMMON : Demersal fisheries monitoring and management along eastern Adriatic coast (Croatian territorial waters) |  | DOLCEVITA : Dynamics of Localized Currents and Eddy Variability in the Adriatic |