Laminarin is widely used in the biomedical and pharmaceutical industries due to its immunomodulatory and anticancer properties. It serves as a potent stimulator of the immune system, enhancing the body's defense mechanisms against infections and diseases. In cancer research, laminarin has shown promise in inducing apoptosis in tumor cells, making it a potential candidate for anticancer therapies. Additionally, it is utilized in the development of drug delivery systems due to its biocompatibility and ability to form nanoparticles. In the agricultural sector, laminarin is employed as an elicitor to boost plant immunity, improving resistance to pathogens and reducing the need for chemical pesticides. Its applications also extend to the cosmetic industry, where it is incorporated into skincare products for its moisturizing and anti-aging effects. Furthermore, laminarin is explored in the food industry as a dietary fiber and prebiotic, promoting gut health and overall well-being. It is also used as a feed additive in animal nutrition, particularly for aquatic and poultry animals, to improve digestion and nutrient absorption, stimulate the immune system, reduce infection risks, and potentially lower cholesterol levels. Some studies indicate its potential in supporting human supplements for intestinal and immune health.