Enjoy Nature's Way Kelp (1x180CAP). Health & longevity through the healing power of nature-that's what it means to Trust the Leaf. Kelp (Ascophyllum nodosum) is a nutritional seaweed. This species grows in the tides of coastal ocean water from zero to ten feet deep. Nature's Way uses whole dried plant guaranteed to contain 0.06% iodine. Note: description is informational only. Please refer to ingredients on the product before use. Please address any health or dietary questions to your health professional before using this item.