The study was carried out during the period from June, 2003 to October, 2004 in the coastal waters of southern central Vietnam (from Da Nang city to Vung Tau city). There were 39 species of poisonous marine  products that can causes a number human deaths. They belonging to three Phyla: Mollusca: 3 species:  (Cephalopoda: I species: Greater blue-ringed octopus (Hapalochaena lunulata Q. & G., 1832); Gastropoda: 2 species: Geographus conus snail (Conus geograpus L., 1758) and Textile conus snail (onus textile L., 1758), Arthropoda: 4 species: (Crustacea: 3 species: Devil crabs (Zosimus aeneus L., 1958); Floridus crabs  (Atergastis floridus L., 1758); (Platrpodia granulosa Ruppell, 1830); Merostomata: 1 horseshoe crabs (Carcinoscorpius rotundicauda Latreille, 1826) and Vertebrata 32 species: Snapper: 1 species: Two-spot red  snapper (Lutjanus bohar Forskal, 1775); Goby: 1 species: Shadow goby (Yongeichthys ne bulosus Forskal, 1775), mainly 21 species puffer of family Tetraodontidae. The Reptilia are 9 species sea snake of subfamily Hydrophinae.