Seaweed (written as 若布, 和布, 稚海藻, or 裙蔕菜 in kanji; scientific name: Undaria pinnatifida) is a marine alga of the class Phaeophyceae, order Laminariales and family Alariaceae.
ワカメ（若布、和布、稚海藻、裙蔕菜、学名：Undariapinnatifida）は、褐藻コンブ目チガイソ科の海藻。