Chlorella and Spirulina are two of nature's richest nutritional sources. Both forms of algae, their effects are varied and wide-reaching: Chlorella helps to detoxify the body and repair your immune system, and Spirulina is considered to help maintain a balanced diet and boost energy. Chlorella and Spirulina are two of nature's richest nutritional sources. Both forms of algae, their effects are varied and wide-reaching: Chlorella helps to detoxify the body and repair your immune system, and Spirulina is considered to help maintain a balanced diet and boost energy.