Listen, O Tribe! This house of Born-to-be-Head-of-the-World here has been entered by the supernatural powers. Now come in! (Boas and Hunt 1906:73)The dancer wearing the transformation mask relates the story of Siwidi, a young man who undergoes a metamorphosis of nature and appearance by his encounters with supernatural sea creatures. In the Kwakiutl legend, Siwidi was accompanied by the undersea’s…