  On August 24, 2023, Japan controversially decided to discharge nuclear
wastewater from the Fukushima Daiichi Nuclear Power Plant into the ocean,
sparking intense domestic and global debates. This study uses evolutionary game
theory to analyze the strategic dynamics between Japan, other countries, and
the Japan Fisheries Association. By incorporating economic, legal,
international aid, and environmental factors, the research identifies three
evolutionarily stable strategies, analyzing them via numerical simulations. The
focus is on Japan's shift from wastewater release to its cessation, exploring
the myriad factors influencing this transition and their effects on
stakeholders' decisions. Key insights highlight the need for international
cooperation, rigorous scientific research, public education, and effective
wastewater treatment methods. Offering both a fresh theoretical perspective and
practical guidance, this study aims to foster global consensus on nuclear
wastewater management, crucial for marine conservation and sustainable
development.
