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Kenjeran Beach in Surabaya has many functions both as a place for recreation, fisheries, and waste disposal sites from the city of Surabaya so that the biota's are affected which causes the accumulation of heavy metals in the body of the biota. The presence of heavy metals in the waters, automatically affects bivalves that live in these waters which will accumulate the metals in the human body. The aims of this research were to determine the Maximum Tolerable Intake (MTI) as a consumer safety limit in P.muricata per week and to recognize the Health Benefit Value of Selenium (HBV-Se) as a food safety index from mercury contamination. In addition, the research aims to determine the Target Hazard Quotient (THQ), and Hazard Index (HI) as consumption risk assessment. The results showed Cadmium has the highest concentration in muscle, Pb has the highest concentration in gills and Cu has the highest concentration in digestive content. The MTI for consumption of P. muricata organs (muscle and gills) based on concentration of Cadmium concentration for adults and toddlers was (0.322 and 0.460) kg/week, (0.054 and 0.077) kg/week, respectively. According to some parameters of food safety, P. muricata is most susceptible to health risks for humans because of the high hazard index. Limiting the consumption of P. muricata based on MTI will reduce the accumulation of metals in humans. [ABSTRACT FROM AUTHOR]