Spirulina is a cyanobacterium (blue-green algae) that can be consumed by humans and other animals.
The World Health Organization described spirulina as “an interesting food for multiple reasons, rich in iron and protein, and is able to be administered to children without any risk,” considering it “a very suitable food.”
The United Nations established the Intergovernmental Institution for the use of Micro-algae Spirulina Against Malnutrition.
Both NASA (CELSS) and the European Space Agency (MELiSSA) proposed spirulina as one of the primary foods to be cultivated during long-term space missions.
（Spirulina under microscope） （Spirulina Powder）