Harnessing the potential of marine vegetation, researchers and industries are turning to seaweed and algae as sustainable solutions for food, energy, and environmental conservation. Unlike traditional crops, they require no freshwater or fertilizers, making them an eco-friendly alternative in global resource management. Seaweed and algae cultivation is rapidly expanding due to its applications in pharmaceuticals, cosmetics, and biodegradable packaging. With their ability to absorb excess carbon dioxide and remove pollutants from marine ecosystems, these organisms contribute significantly to climate resilience. Advances in strain selection and cultivation techniques have improved productivity, making large-scale farming more viable. Additionally, integrating these aquatic plants into aquaculture systems enhances water quality and promotes circular economies. As interest in alternative proteins and biofuels rises, seaweed and algae stand at the forefront of sustainable innovation, offering a renewable resource that benefits both industry and the environment.