The World Congress on Aquaculture, Fisheries & Marine Biology (WAC 2026) will be held June 25–27, 2026, in Barcelona, Spain, and online as a hybrid event. Under the theme “Aquaculture Horizons: Integrating Science, Sustainability, and Global Collaboration,” the congress brings together global experts to explore innovative research, sustainable practices, policy strategies, and technologies shaping the future of aquaculture, fisheries, and marine ecosystems.