Mr. Seaweeds are macroscopic marine algae, rich in vitamins, minerals and amino acids. They contain many trace elements and essential nutrients needed to fight against many human diseases, including heart problems, hypertension, sugar problem and cancer. They are characterized by a thallus organization and the absence of true vascular tissues. Taxonomically seaweeds are distributed in major algal groups i.e. in green algae (Chlorophyta), red algae (Rhodophyta) and brown algae (Phaeophta). Red seaweeds are more abundant in subtropical and tropical waters, whereas brown seaweeds predominate in temperate regions. The capability of rapid biomass production and presence of favourable nutritional composition, makes seaweeds a significant contributor of nutritional security, pharmaceutical industry, aquaculture feed, biofertilisers and other agricultural amendments. These attributes are particularly relevant in the context of declining arable soil fertility, stagnating crop yields in many regions, and growing global population pressures that increase the risk of food insecurity. Many coastal states possess extensive bays and lagoons that are suitable for marine farming, yet large-scale cultivation of seaweeds remains underdeveloped. Seaweed culture typically requires relatively low capital and input intensity, can deliver high returns per unit area, and provides opportunities for local employment making it an attractive livelihood option for coastal communities. Strategic investment in cultivation infrastructure, species selection, post-harvest processing, and product development and value-chain integration can increase domestic supply, expand exportable products, and generate socioeconomic benefits for coastal populations. With targeted R&D and investment, countries such as India could become significant producers of seaweed-derived products, enhancing both national food and nutritional security and fisheries export value.
Aquaculture, Macroalgae, Nutraceuticals, Kombu, Carrageenan
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