They are annual marine algae of Alariaceae and Phaeophyta family with purplish brown color and are thallus plants with distinguishable roots, stems and leaves. Classification: AlariaceaeDistribution: Korea, Japan Size: 1~2m in length and 50m in width EfficaciesHypotensive ActionThe hypotensive substances, such as histamine, contained in the seaweed are used as the safe hypotensives that reduces the blood pressure without any sideeffects. Carcinostatis ActionThe various substances of the seaweeds are reported to perform carcinostatis actions oppressing the cancer cells to grow less than. Also, seaweeds vitalize the movement of our intestines to prevent rectal cancer. Anti-clotting Actions Seaweed performs anti-clotting actions very similar to heparin. This substance in seaweeds cleans the fats in blood as heparin does to quickly remove the visible fats in blood, to reduce the harmful LDL Cholesterol and increases the helpful HDL Cholesterol. Detoxication ActionThe mucilage and sugar of the seaweed reduces the harms of cholesterol or the contamination of heavy metals. They interrupt the absorption of cholesterol and attach to the heavy metal contained in chemically contaminated food to discharge it.