Our wild Giant Kelp, Macrocystis pyrifera, is hand hand harvested by us off the coast of Central California. The abundant and perennial kelp forests off the coast of California can grow up to 2 feet a day and live up to 8 years! Giant kelp is rich in nutrients due to the unique phenomena of upwelling off the coast of California, recycling nutrient rich water from the depths to the warmer surface. Our kelp is then freeze dried and milled into a fine 100% kelp powder and encapsulated into 132 mg vegetable capsules, 60 capsules per bottle. One capsule a day delivers you 100% your daily value of iodine.