Seaweed farming gaining momentum as it turns to be game-changer for economy, environment

Seaweed cultivation is gaining momentum across India’s vast coastline offering economic prosperity to coastal communities and contributing to environmental conservation. Unlike in the past, coastal communities are increasingly seen embracing this practice with marine experts and government agencies promoting seaweed farming as a game-changer for economy and environment.

With global demand surging and research revealing its multi-faceted benefits, seaweed farming presents a compelling business proposition, said Grinson George, Director of ICAR-Central Marine Fisheries Research Institute. “The global seaweed market, valued at $16.5 billion in 2022, underscores the sector’s immense potential. With its extensive coastline, India is strategically positioned to capitalise on this growth,” he said.

Successful adoption of CMFRI’s technologies like Integrated Multi-Trophic Aquaculture (IMTA) system further improved the yield and income of seaweed farmers, paving the way for the popularisation of this farming practice across the coastal region. The IMTA is a novel method which combines seaweed farming with sea cage farming. Cultivating species like Kappaphycus has been proven to be a substantial source of income, with integrated farming systems further increasing yields.

Blue gold

Termed as Blue Gold, seaweed farming provides a sustainable alternative to traditional fishing, reducing pressure on marine ecosystems while ensuring steady incomes, Grinson George said.

The development of fish farmer producer companies within the sector can further empower local stakeholders ensuring better market access and fair prices, he added.

Applications of seaweeds extend to various industries, including food, cosmetics and pharmaceuticals diversifying market opportunities. Research by CMFRI has unlocked the potential of Indian seaweeds in developing neutraceutical products, addressing growing demand for natural health solutions. Seaweed’s ability to sequester carbon and reduce methane emissions positions it as a crucial tool in climate change mitigation efforts.

On scaling up the production, CMFRI Director stressed the need for comprehensive coastal leasing policies and a robust mariculture framework, which are essential to attract investment and facilitate industry growth.

The development of seed banks and micro-propagation facilities is crucial for ensuring a consistent supply of quality seedlings. Investment in R&D to improve seaweed strains and farming techniques, expansion of offshore farming techniques and strengthening supply chains and promoting value added products are also critical for further boosting this sector, he said.

Published on April 17, 2025

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