The International Day for the Fight Against Illegal, Unreported, and Unregulated (IUU) Fishing is observed annually on June 5th. This day is dedicated to raising awareness about the significant threats posed by IUU fishing to sustainable fisheries, marine ecosystems, and the livelihoods of millions of people who depend on fishing for food and income. IUU fishing undermines national and regional efforts to manage fisheries sustainably and responsibly, leading to the depletion of fish stocks, loss of biodiversity, and economic hardships for legitimate fishers. The United Nations Food and Agriculture Organization (FAO) plays a pivotal role in promoting international cooperation and the implementation of measures to combat IUU fishing. By fostering global awareness and encouraging concrete actions, this observance aims to ensure the long-term conservation and sustainable use of marine resources, contributing to the broader goals of environmental sustainability and food security. On this day, governments, organizations, and individuals are encouraged to advocate for stronger enforcement of fishing regulations, support transparency and traceability in seafood supply chains, and promote the adoption of responsible fishing practices worldwide.