Can rivers be redesigned to make seaweed gardens to filter the water?

Yes, rivers can be redesigned to incorporate seaweed gardens for water filtration. By creating specific areas within river systems with suitable conditions for seaweed growth, these gardens can help absorb excess nutrients and pollutants, improving water quality. This approach not only enhances ecosystem health but also promotes biodiversity and can provide additional benefits such as carbon sequestration and habitat for aquatic life. However, careful planning and management are essential to ensure that such interventions do not disrupt existing ecosystems.