Turning the tide: India’s new seaweed import guidelines and their implications for sustainable aquaculture

India has over 7,500 km of coastline and approximately 844 documented seaweed species yet contributes less than 0.01% of global seaweed production. Output has remained below 300 tonnes (dry weight) per year since the 2013–2014 production collapse. This stagnation has persisted despite USD 76.6 million committed under the Pradhan Mantri Matsya Sampada Yojana and a 420% rise in farmgate prices, which together indicate that the binding constraint is biological rather than economic. The sector depends almost entirely on a single introduced species, Kappaphycus alvarezii , cultivated from a narrow genetic base since 2001 and repeatedly affected by ice-ice disease and epiphytism. In 2024, the Ministry of Fisheries, Animal Husbandry and Dairying, Government of India, issued India’s first structured framework for the import of live seaweeds and seaweed germplasm. This article reviews that framework. We compare it with two groups of jurisdictions chosen for explicit reasons: the Philippines and Indonesia, the leading producers of Kappaphycus and Eucheuma , whose biosecurity experience parallels India’s; and Norway, an exemplar of well-resourced precautionary aquaculture governance. We assess the 2024 guidelines on four dimensions—quarantine protocols, risk assessment, traceability, and access and benefit-sharing—using doctrinal legal analysis and a comparative governance scoring framework. We find that the guidelines appear well designed in their quarantine and risk-assessment provisions but are likely to encounter implementation challenges in enforcement capacity, quarantine infrastructure, and post-release monitoring — challenges evidenced by the comparative experience of other jurisdictions and by the institutional constraints documented in §3.4. We recommend three complementary interventions to support effective implementation: native-species breeding programs, dedicated seaweed quarantine facilities, and integrated environmental monitoring. The article offers an evidence-based reference point for policymakers, researchers, and industry stakeholders working to expand India’s seaweed sector while protecting marine biodiversity.