Spirulina
Spirulina is a blue-green algae that is actually a cyanobacteria. Spirulina or Arthrospira is a blue-green alga that became famous after it was successfully used by NASA as a dietary supplement for astronauts on space missions. Spirulina has 3900% more beta-carotene than carrots. Spirulina has 2300% more iron than spinach. Spirulina has 300% more calcium than whole milk. …