... to Arthrospira; nonetheless, the older term Spirulina remains the popular name. Spirulina is cultivated around the world, and ... supplement in the aquaculture, aquarium, and poultry industries. Spirulina are free-floating filamentous cyanobacteria characterized by cylindrical, ... multicellular trichomes in an open left-hand helix. Spirulina occurs naturally in tropical and subtropical lakes with high ...