Due to rapid urbanization the anthropogenic stress and the pollution load in the estuary is increasing day by day. To assess the environmental quality regarding heavy metals in the oceans, the bioavailable fraction from food and water is of great importance. Aquatic organisms have been used in comparative monitoring of pollution effects in different systems and to locate sources of toxicants. Bio-monitoring approach has proved to be promising as a reliable means of quantifying biological effects of complex effluents. Heavy metal concentrations in biota draws interest due to their proven physiological functions and substantial anthropogenic influence on their levels in the environment ECSF is working to monitor the pollution level which would ultimately help to identify the sources.

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