The concenlration of Cd, Pb, Cu, Zn and Mn in fishes, shell fishes and seaweed near a caustic soda plantudhas been measured. Trace metal concentration in the oyster (Crassostrea cucullata), mussel (Pema viridis)udand seaweed (Sargassum tenerimum) collected from the vicinity of discharge point were found to be comparativelyudhigh. It is found that oysters are more effective bioaccumulators for Zn, Cu, and Cd, whUeudmussels and seaweeds for Pb and Mn.udThere were no significant differences between the whole soft tissue for Pb and Cd concentration of P.udviridis collected from a relatively clean and contaminated sites. The kidney and mantle showed significantuddifferences for all the trace metals, gill for Zn, Cu, Pb and Cd and digestive gland for Zn, Cu and Cd.udThe kidney was found to be a major site of trace metal accumulation followed by digestive gland, fromudboth the sites.
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