The Marine Experimental Station (MES) of PIBOC is located 100 km south of Vladivostok on the shore of picturesque Trinity Bay. It was founded in 1967. A fouth-stroyred laboratory building, furnished with water and electricity, provides for chemical and biological studies of marine organisms and higher terrestrial plants. Warm apartments for scientists and personnel allow working at the station the year around. A building for scuba-divers, with compressors and decompression chamber, a small pier and boats affoard collecting of marine organisms by scuba-divers in the Trinity Bay area. Colleagues from different Russian and international institutes carried out joint studies here. Collection and primary treatment of raw marine materials are performed at the Marine Station to support effective work at PIBOC's laboratories. Taxonomic distribution of different enzymes from marine organisms (laminarinases, alginat-lyases, nucleases, etc.) are carried our at MES's laboratories. Lipid compositions of many marine invertebrates and algae from the Sea of Japan are also studied at the Marine Station. A series of scientific papers concerning the action of biologically active natural products against differentiated sea urchin embryos were published after study at MES. Microbiological studies significantly expanded the Collection of Marine Microorganisms (KMM). There is a small technological pilot area to produce biochemical products. An underwater "plantation" to rise mussels was established in 1995.