AI4SEA is motivated by the urgent need to integrate advanced Artificial Intelligence (AI) into autonomous physical systems for the ecological restoration and monitoring of marine habitats. While biodiversity loss and habitat degradation are escalating globally, particularly in European coastal ecosystems, restoration technologies remain manual, shallow-water limited, and economically unsustainable at scale. Current practices—mainly diver-based—are constrained by cost, depth, endurance, and operational risk, making them unsuitable for large-scale or continuous intervention.