Kelp
Kelps are large brown algae seaweeds that make up the order Laminariales. There are about 30 different genera.
Aquaculture of giant kelp
Aquaculture of giant kelp, "Macrocystis pyrifera", is the cultivation of kelp for uses such as food, dietary supplements or potash. Giant kelp contains compounds such as iodine, potassium, other minerals vitamins and carbohydrates.