EcoeFISHent aims to establish a replicable, sustainable cluster for a climate-neutral circular economy. It involves six interconnected circular value chains (CVC) that bridge blue and green economies while harmonizing human activities with marine ecosystems and protected areas. The project’s objective is to efficiently utilize fish-processing by-products to produce bio-actives, galantine for premium supplements and skincare products, and biodegradable packaging materials. Additionally, other fishing industry by-products will be transformed into soil fertilizers, biodiesel, and chitin for cosmetics.