<![CDATA[This study examines the effectiveness of cooperation between the Directorate of Water and Air Police (Polairud) and other institutions in addressing illegal fishing in Indonesian waters. The phenomenon of illegal fishing, particularly by foreign vessels in the Exclusive Economic Zone (EEZ), has caused significant economic, social, and ecological losses. Polairud, as a maritime law enforcement agency, plays a crucial role in patrolling, investigating, and securing maritime areas. However, its effectiveness relies heavily on synergy with other institutions such as the Ministry of Maritime Affairs and Fisheries (KKP), the Indonesian Navy, and the Maritime Security Agency (Bakamla). This study uses a juridical-empirical approach with qualitative analysis of statutory data, institutional documents, interviews, and reports of joint patrol activities. The results indicate that inter-agency cooperation has been implemented through integrated patrols, information exchange, and technical training, but still faces obstacles such as overlapping authority, sectoral egos, and limited patrol and communication facilities. Regulatory harmonization increased inter-agency coordination, and the establishment of a Joint Command Center as a joint control center for maritime law enforcement are needed. Strong institutional synergy will strengthen efforts to eradicate illegal fishing and guarantee protection of the sovereignty and sustainability of Indonesia's marine resources.]]>
