The Division of Marine and Environmental Research, with 104 scientists and technicians organized in 12 laboratories and one marine station (Martinska, near the city of Šibenik), is the largest interdisciplinary RBI division.
The laboratories carry out research in oceanography, aquatic chemistry, radioecology, geochemistry, biogeochemistry, bioelectrochemistry, environmental electrochemistry, ecotoxicology, aquaculture and fish pathology, ecological modeling and environmental informatics. The scale of research problems spans from nanoscience to satellite oceanography.
Since 1989, the DMER has acted as the National Reference Laboratory for the State Office Directorate for Water of the Ministry of Regional Development, Forestry and Water Management, and participated in the implementation of the network of Croatian accredited laboratories that analyze waste waters and natural waters.
Since 1989, the DMER has acted as the National Reference Laboratory
In 2008, the Laboratory for Radioecology was accredited according to the norm HRN EN ISO/IEC 17025:2007, the Croatian Accreditation Agency and the Decision of the State Office for Metrology, and became the National Laboratory for Radioactivity Measurements.