Introduction A preliminary study on peptide toxin from Cymatium pileare ZHOU Yongcan,PAN Jinpei,HU Keping,RU Binggen,ZHOU Pei'ai Studies on growth characters of marine dinoflagellate,Prorocentrum lima(Ehrenberg)Dodge WU Jun,LIN Yongshui,LIU Ningning Studies on glycosaminoglycans from Pinctada fucata(Gould) ZHANG Si,PAN Jinpei,LI Jing Determination of molecular weight and distribution of glycosaminoglycans from Pinctada fucata(Gould)(PGAG) LI Jing,ZHANG Si,XU Weihong Studies on fouling organisms in sewage dumping area near Haidiandao of Haikou WANG Huajie,YAN Wenxia,YAN Yan,DONG Yu,YAN Tao,WANG Lu Studies on marine fouling community in Basuo Harbor,Hainan Island YAN Yan,YAN Wenxia,DONG Yu,WANG Huajie,WANG Lu A preliminary study on distribution of plankton productivity in northern waters of South China sea HUANG Liangmin,CHEN Qingchao,LIN Yongshui A preliminary study on euphotic zone in southwestern waters of Nansha Islands Ⅰ.Space-time structure of chlorophyll-a and environmental factors LIU Sheng,HUANG Liangmin,HAN Wuying Studies on alcohol extract from Nephthea capnelliformis on blood pressure and heart physiology and its acute toxicity LIU Xijin,ZHONG Hongmao,ZENG Longmei,SU Jingyu,ZHONG Yongli,ZENG Zhi,XU Xiaohua,CHEN Sheng Pharmacological effect of Galaxaura sp.extract on central nervous system ZHONG Hongmao,LIU Xijin,ZHAO Di,LI Ruisheng,LIN Zhousin,ZHANG Weihan A study on pharmacology and toxiology of acohol extract from Isis sp.ZHONG Hongmao. LIU Xijin,ZENG Longmei,SU Jingyu,ZHONG Yongli,ZENG Zhi,XU Xiaohua,CHEN Sheng Antitumor activities of LKB2 from Sarcophyton trocholiophorum ZHAO Di,ZHONG Yongli,SU Jingyu An application study on“Nutrient for Marine Algae” Ⅱ.Culture of some species of Bacillariophyta LONG Lijuan,SUN Huili,HE Weihong An application study on“Nutrient for Marine Algae” Ⅲ.Culture of some species of Chlorophyta LONG Lijuan,HE Weihong,SUN Huili Preliminary studies on polysaccharides from Spirulina platensis,Strain SCS cultured in seawater DONG Junde,WU Botang,XIANG Wenzhou,XIA Deru,HE Miaojuan A study on lice disease in cultured grouper Epinephelus sp. Ⅳ.Changes of ETS isozymes in five kinds of tissues of diseased fish WU Zaohe,SHEN Qi,PAN Jinpei Studies on ulcer disease pathogens in grouper Epinephelus akaara cultured in marine NET-cage WU Houbo,WU Zaohe,PAN Jinpei Studies on Rickettsia-like organism(RLO)diseases of tropical pearl oyster Ⅲ.Morphology of RLO parasitized in Pinctada fucata WU Xinzhong,PAN Jinpei Impact prediction and assessment of Sanya Power Plant on marine environment HUANG Xiaoping,WEN Weiying Flakt-Hydro flue gas de-sulfurization effect from coastal coal-burning power plant on marine environment SUN Yun,HE Qingxi Deep sea water——natural treasure of aquaculture in Hainan Island HAN Wuying,LIU Sheng Research on exploitation and utilization of resources of seaweed manure in Hainan SUN Huili,LONG Lijuan,PENG Yunhui,CHEN Lingdi Status and management of mangroves and mangrove coasts in China ZHANG Qiaomin,ZHANG Yechun,SUN Shujie