Figure 1. The sampling locations: (l) site l Fish dock, Chonburi; (2) site 2 :Wornapa beach ;(3) site 3: Wastewater discharge, Bangpra; (4) site 4: Bangpra community; (5) site 5 Si Racha Fisheries Research Station, (6) site 6: Si Racha pier: (7) site 7: Si Racha Shipping area; (8) Site 8: Leam Chaban pier; (9) site 9: Bang Lamung; (10) site 10: The Sanctuary of Truth. The geographical coordinates and the corresponding yellow pins marked sites 1-10 in order from top to bottom .