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Botanical Name: Norwegian Kelp.
Species: A. nodosum
Norwegian Kelp is a large, common, brown alga, in the Class Phaeophyceae. It is seaweed of the northern Atlantic Ocean, also known as Ascophyllum nodosum, Knotted Kelp, knotted wrack or egg wrack. It is common on the north-western coast of Europe (from Svalbard to Portugal) including east Greenland and the north-eastern coast of North America.
It is is very popular amongst the science community and has been claimed to be both the best known seaweed on the planet as well as the most researched by the academic community
Kelp (acophyllum nodosum) is a seaweed with a long history of use as a food and as a source of assimilable iodine. Ascophyllum nodosum is a species of kelp that only grows deep in ocean waters. Other off shore kelps may absorb heavy metals and toxins. That is why Now Foods kelp is wild grown Norwegian Kelp, and is comprised only of valuable nutrients from ocean floors. We use the whole dried kelp plant.
Kelp is a large, leafy brown algae that belongs to the seaweed family and grows in the colder waters of the world’s oceans. It is a good source of marine minerals, including potassium, magnesium, calcium and iron. It is also an excellent source of iodine, which has been shown to support healthy thyroid function. Your thyroid gland is responsible for producing the hormones that support normal cellular metabolism. As with most green foods, kelp also contains vitamins and cell salts essential for good nutrition.*
Description and ecology:
Ascophyllum nodosum has long fronds with large egg-shaped air-bladders set in series at regular intervals in the fronds and not stalked. The fronds can reach 2 m in length and are attached by a holdfast to rocks and boulders. The fronds are olive-brown in color and somewhat compressed but without a mid-rib. 
This seaweed grows quite slowly and can live for several decades; it may take approximately five years before becoming fertile.
Life history is of one diploid plant and gametes. The gametes are produced in conceptacles embedded in yellowish receptacles on short branches.
Ascophyllum nodosum is found mostly on sheltered sites on shores in the mid-littoral where it can become the dominant species in the littoral zone.
Polysiphonia lanosa (L.) Tandy is a small red alga, commonly found growing in dense tufts on Ascophyllum whose rhizoids penetrate the host. It is considered by some as parasitic.
Varieties and forms:
Several different varieties and forms of this species have been described.
Ascophyllum nodosum var. minor has been described from Larne Lough in Northern Ireland. 
There are free floating ecads of this species such as Ascophyllum nodosum mackaii Cotton, which is found at very sheltered locations, such as at the heads of sea lochs in Scotland and Ireland. 
The species is found in a range of coastal habitats from sheltered estuaries to moderately exposed coasts, often it dominates the inter-tidal zone (although sub-tidal populations are known to exist in very clear waters). However it is rarely found on exposed shores, and if it is found the fronds are usually small and badly scratched.
It has been recorded as an accidental introduction to San Francisco, California, and eradicated as a potential invasive species there.
Recorded in Europe from: Faroe Islands, Norway, Ireland, Britain and Isle of Man Netherlands North America: Bay of Fundy, Nova Scotia, Baffin Island, Hudson Strait, Labrador and Newfoundland.
Ascophyllum nodosum is harvested for use in alginates, fertilisers and for the manufacture of seaweed meal for animal and human consumption. It has long been used as an organic and mainstream fertilizer for many varieties of crops due to its combination of both macronutrient, (eg. N, P, K, Ca, Mg, S) and micronutrients (eg. Mn, Cu, Fe, Zn, etc.) It also host to cytokinins, auxin-like, gibberellins, betaines, mannitol, organic acids, polysaccharides, amino acids, and proteins which are all very beneficial and widely used in agriculture.
Ascophyllum nodosum along with Macrocystis pyferais harvested in Ireland, Scotland and Norway from which alginates are extracted it is one of the world’s principal alginate supply.
A long history of use as a source of assimilable iodine. Some benefits include:
– Contains many nutrients absorbed from the sea.*
– Naturally Pure Wild Grown Norwegian Kelp
– Natural Potency of Iodine.
Norwegian Kelp may reduce, or even eliminate, not only bacterial plaque and dental caries but also arteriosclerotic plaque, atherosclerotic plaque, pleural plaque, renal calculus, biliary calculus, and prostatic calculus.
Furthermore, the medicinal and dental uses have been recognized for well over a century.
The information presented herein is intended for educational purposes only. Individual results may vary, and before using any supplements, it is always advisable to consult with your own health care provider.