Cyanotech Corporation, an agricultural company, engages in the production of natural products derived from microalgae worldwide. The company offers BioAstin Hawaiian Astaxanthin, a natural antioxidant to enhance skin, and to support eye, joint and immune health; and Hawaiian Spirulina Pacifica, a nutrient-rich dietary supplement to support natural energy, immune system, and cardiovascular health, as well as a source of antioxidant carotenoids. It also provides contract extraction and research and development services. The company sells its products through distributors, retailers, and online channels; direct to consumers; and in bulk form to manufacturers, formulators, and distributors in the health food, cosmetic manufacturers and nutraceuticals, and dietary supplement markets. Cyanotech Corporation was incorporated in 1983 and is headquartered in Kailua-Kona, Hawaii.