Organotin compounds in seawater and Mytilus galloprovincialis mussels along the Croatian Adriatic Coast

► First data on OTC concentrations in seawater and mussels Mytilus galloprovincialis along the Croatian Adriatic Coast. ► TBT based antifouling paints are still in use in Croatia despite ban of its usage. ► TBT concentrations in seawater are higher than allowed one at 93.6% of all sampling locations.