Micronuclei (MN), nuclear buds (NB) and NB on filament (NBf) were studied.
MN, NB and NBf were analysed in herring from 65 stations located in the Baltic Sea.
Highest genotoxicity was recorded in fish caught at chemical munitions dumping areas.
High genotoxicity was shown by MN, NB or NBf at least in 50% of stations.