The purpose of this research is to learn about the division of authority in the management of marine resources and the handling of social conflicts that occur between fishermen in terms of peace education in national law. This study uses a normative juridical research methodology by conducting a comprehensive study of theoretical aspects, legal rules and legal principles that focus on the authority of sea management and handling social conflicts through peace education on Madura Island, East Java Province, Indonesia. The main data sources are secondary data obtained from primary legal materials, documentation, and relevant research studies. The data analysis technique uses content analysis which is intended to describe the characteristics and draw inferences from the research conducted. The results showed two main points. First, since the enactment of Law Number 23 of 2014, the authority for marine management by the district government has been abolished and taken over by the provincial government. As a result, the district government can only receive reports from the community about conflicts between fishermen and no longer have the authority to manage the sea. On the positive side, it minimizes the abuse of power, but from the negative side, the community is getting further away from the district/city authorities who are supposed to handle conflicts between fishermen in their area. More deeply, the Provincial Government streamlines the formation and development of Community Supervisory Groups (Pokmaswas) as a form of cooperation in the supervision of marine and fishery resources by security forces and law enforcement as well as the community. Second, the law related to handling social conflicts is an effort to implement peace education because it is carried out in the context of dealing with conflicts without violence for the sake of harmony, unity, and peace by involving all parties involved in conflicts between fishermen. The conclusion is that the formation of Pokmaswas and laws and regulations are not sufficient for handling conflicts between fishermen, they need to be supported by district/city regional policies as owners of management places/areas for equitable distribution of welfare and justice. Local governments need to instill peace values as mandated in the National Law, Pancasila, and the Preamble to the 1945 Constitution in various peace education and training programs by focusing on anti-violance training.