What is kelp?

Kelp is a type of seaweed or algae belonging to the order Laminariales. Though its appearance is similar to that of plants, it is technically not a plant, but a protist. There are many different kinds of kelp, constituting around 30 genera. Kelp grows in underwater kelp forests, in shallow, clear waters cooler than 68°F (20°C). It grows rapidly and offers food and protection for other marine life. Kelp is recognizable as the seaweed you may have seen on a trip to the beach. It is anchored to the ocean floor by a structure known as a holdfast, and most of its body resembles a stem with leaves, correctly termed a stipes with blades. Kelp also features air-filled bladders that allow the rest of the body to float and bring the leaf-like blades to the surface of the water. Humans throughout history have found many uses for kelp. Soda ash, once produced by burning kelp, is a primary ingredient in glass and soap. Alginate, a carbohydrate harvested from kelp, is used as a thickening agent in ...  more

A. Kelp is a type of algae that contains abundant vitamins (A,B,C, etc.) and minerals (iodine, iron, calcium, potassium, phosphorus, zinc, copper, etc.). Kelp has also been found to be beneficial for brain and spinal cord function, and for blood circulation. Also, due to its iodine content, it may help to normalize thyroid function.