Spirulina - Bacteria
Spirulina is the common name for a food supplement made out of Arthrospira, another genus different to Spirulina with similar morphological structure (the division is from 1989). Spirulina is a cyanobacteria, which means that can photosynthesize. First considered as a green-blue alga, Spirulina is widely distributed in South America, Africa and Asia in lakes with a high pH and carbonate concentration. The most important pigments that can be extracted from Spirulina are phycocyanin and phycoerythrin, responsibles of its blue color.