Aquaculture waste mismanagement poses a significant challenge globally, and increasing regulatory pressure demands that aquaculture facilities comply with stricter standards on waste discharge and ecosystem protection. Additionally, unsustainable practices are causing severe environmental harm, including ocean hypoxia, up to 70% biodiversity loss, and chemical pollution from excessive use of antibiotics. Polychaeta offers a transformative solution for aquaculture waste management through an integrated farming system that closes the loop between fish and shrimp farming and marine worm production. By installing specialized marine worm farming units within aquaculture facilities, Polychaeta converts organic waste—typically a costly and environmentally damaging byproduct—into high-value marine worms used as natural, sustainable aquafeed and fishing bait. Supported by a real-time smart monitoring system, Polychaeta’s solution empowers farmers to optimize production, reduce losses, and comply with tightening environmental regulations, while also opening a new revenue stream. This circular model not only minimizes waste and environmental harm, but also enhances farm productivity, promotes biodiversity, and sets a new standard for sustainable aquaculture.