An attempt has been made to review pollution of the Baltic fish and fishery products by hexachlorobenzene (HCBz) and to estimate daily intake of HCBz and pentachlorobenzene (PCBz) with marine and freshwater fishes and fishery products in Poland. The calculated arithmetic mean weighed concentrations of HCBz in muscle tissue of the Baltic fish are 22 ng/g wet weight in herring in 1973-1985 (n = 3115) and 4.3 ng/g in 1986-1992 (n = 371); 14 ng/g in sprat in 1971-1985 (n = 939); 6.4 ng/g in salmon in 1976-1982 (n = 151); 14 ngig in eel in 1981-1982 (n = 480); 200 ng/g m cod-liver in 1973-1978 (n = 72) and 85 ng/g in 1979-1990 (n = 918); 0.65 ng/g in cod in 1981-1992 (n = 527); 2.2 ng/g in flatfishes in 1974-1992 (n = 396); 0.96 ng/g in perches in 1983-1992 (n = 70) and 2.8 ng/g in other fish species in 1981-1992 (n = 192). The intake of HCBz has been assessed for 60 to 92 ng/person/day in the years 1973-1985 and from 45 to 56 ng/person/day (mean 52 ng) in 1989-1996, while of PCBz for 7.8 to 11 ng/person/day (mean 9.4 ng) in 1989-1996.