The ocean is a complex, multi-layered space that crosses the traditional sense of fisheries, security, maritime transport, and resource development in an unconventional sense, environment. It has mainly dealt with fishing problems in the East China Sea, ownership over islands, or security governance. Recently, we have begun to pay attention to the marine governance of each region that deals with specific issues such as overfishing and depletion of the East China Sea fisheries resources. Nevertheless, there is a lack of discussion on the possibility of establishing a maritime economy or marine cooperation system in the East China Sea region in political and economic terms. This session aims to identify the marine economy and major marine industries of the major neighboring countries of the East China Sea. Then we discuss the trends of maritime policy that central and local governments cooperate for sustainable marine resources and aim at marine economic development.<