Aquatic plants have potential as feedstuffs in certain nations, but the economics of harvesting and processing would prohibit their direct utilization as a forage in technologically advanced nations. However, nutrient pollution is accelerating rates of eutrophication of natural waters in many areas. Aquatic plants produce large standing crops and accumulate large amounts of nutrients. Systems based on the harvest of aquatic plants have potential application in removing nutrients from effluents and natural waters. Large quantities of all elements essential for plant growth would be removed in proportion to their compositional ratios in the particular species. Plants could subsequently be used as forage to partially offset the cost of nutrient removal. The actual feasibility of these systems must be tested with pilot studies. These studies will require an interdisciplinary approach, and much research will be required. This paper has been intended to merely point out the apparent potential of aquatic angiosperms for nutrient removal. If usable, such systems would turn undesirable nutrient pollution into fertilizer to increase aquatic plant production, and the economics of nutrient pollution abatement would be improved.