With approximately 690 million people left hungry, our way of living is driving a triple planetary crisis of climate change. To combat this, the UN has called the current decade a time for ecosystem restoration. As part of that movement, the European Commission has approved more than €380 million worth of funding for 168 new projects across Europe under the LIFE Programme for the environment and climate action. This means that to move towards a circular economy, manufacturing must get smarter – with its technology, with its food production processes, and with its procurement policies. This article explores how those in the seafood industry can make complete use of underutilised side streams at scale through closed-loop manufacturing to deliver ingredients that are beneficial – in terms of their functional and nutritional properties – to our society.