Organic Spirulina Powder Spirulina is a natural, blue-green algae that harnesses energy from sunlight to fuel its growth. As one of the most protein-dense plant foods available and a rich source of micronutrients, it really is one of the world’s best, and original, superfoods. Cultivated and harvested in pure, freshwater pools, our minimally processed spirulina is dried into a naturally nutritious powder. May contain naturally occuring sulphites. Produced in Asia, packed in the UK. Certified Organic by the UK Soil Association and registered by the Vegan Society.