... -green algae that is rich in protein, vitamins, minerals, and carotenoids, antioxidants , can help protect cells from damage.the ... beta-carotene, vitamin E, manganese, zinc, copper, iron, selenium, and gamma linolenic acid (an essential fatty acid) is very rich ... algae that flourishes in warm climates and warm alkaline water. It is available dried and freeze-dried. 5.Spirulina is available in pill ...