Harnessing the oceans for global food security

As the global population approaches 9.7 billion by 2050, ensuring reliable access to sufficient, safe, and nutritious food becomes increasingly urgent. Traditional land-based agriculture faces mounting challenges, including limited farmland, soil degradation, irrigation water scarcity, and the impacts of changing weather patterns. To meet future demand, global food production must increase by approximately 60% by using alternative, sustainable food sources. Oceans, which cover 71% of the Earth’s surface, currently contribute just 2% of global caloric intake but hold immense potential to support global food security and sustainability. This article explores the expanding role the oceans could play in securing food through wild fisheries, aquaculture, and emerging innovations. While wild capture fisheries remain vital, their sustainability is threatened by overfishing and habitat degradation. Aquaculture is the fastest-growing sector in global food production, which provides over half of all seafood for human consumption and offers eco-friendly solutions when managed responsibly. Nutrient-rich seaweed and microalgae farming require no freshwater or arable land and can supply nutritious food with minimal environmental impacts. Additionally, underutilized low-trophic species, such as mesopelagic fish and jellyfish, offer new protein sources. Moreover, marine biotechnology can support the development of nutritious foods fortified with healthful bio-compounds and nutrients, naturally available in seafood. Achieving these goals requires sustainable practices, innovation, inclusive governance, and responsible consumer behavior. By harnessing the ocean’s potential, food production will be diversified with supporting the coastal economies, and building a resilient, climate-smart approach to feed a growing world population.