Aquaculture, a practice with a rich history dating back to ancient times, plays a crucial role in providing fresh, locally sourced fish to consumers, offering a means of food sovereignty and reducing dependence on distant sources. Originating in China over 4,000 years ago, aquaculture has evolved into a significant industry that is currently contributing to job creation, tourism, local gastronomy, and environmental research in Spain. This industry is marked by its sustainability, transparency, and innovation, with a focus on animal welfare, climate change adaptation, and the circular economy. It is estimated that fish consumption in 2030 will reach 21.4 kilos per capita, underscoring its importance in global nutrition. Spain emerges as a leader in both the production volume and the advancement of research in sustainable European aquaculture practices, highlighting its commitment to the blue transformation, which promotes food sovereignty and environmental sustainability.