Spirulina and Chlorella are two micro-algae which have been growing for millions of years in the pure water surrounding the equatorial region. These microalgae are edible for humans, so they can be consumed like any other form of food. These micro-algae contain an impressive range of nutrients: Vitamins, Minerals, Trace elements (micro minerals), Essential fatty acids, Proteins, Nucleic acids (RNA and DNA), Chlorophyll, and a broad spectrum of phytochemicals. In fact, they contain each nutrient that the human body needs (theoretically speaking you would be able to survive on them). Spirulina and Chlorella proportionately contain more proteins and also more digestible proteins than animal food (chlorella is a source of protein, consisting of 58% of proteins). Moreover, these proteins contain all 8 essential amino acids which the human body needs.