Blue swimming crab is one of the economically important species that inhabit a wide range of inshore and continental shelf areas, including sandy, muddy and sea grass habitats, from the intertidal zone to at least 50 m depth. The blue swimming crab is found in near-shore and estuarine waters throughout the IndoPacific. Because of its good flavor, blue swimming crab is in high demand in the market (Sudtongkong, 2006).