Cyanotech Corporation (Cyanotech) produces natural products derived from microalgae. Cyanotech is engaged in the cultivation and production of microalgae into natural health and nutrition products. The Company cultivates two microalgal species from, which its two major product lines, spirulina products and natural astaxanthin products, are derived. The Company's products include Hawaiian Spirulina Pacifica, which is a dietary supplement used for extra energy, a strengthened immune system, cardiovascular benefits and as a source of antioxidant carotenoids, and Hawaiian BioAstin natural astaxanthin, which is a dietary antioxidant shown to support and maintain the body's natural inflammatory response, to enhance skin, and to support eye and joint health. The Company's wholly owned subsidiary is Nutrex Hawaii, Inc. (Nutrex).