Power-of-the-Shining-Heavens (Sîns Sganagwai) is, in the ethnography of John Swanton, the highest of all Haida supernatural beings: an impersonal sky-power rather than an anthropomorphic god, dwelling above the world and serving as the ultimate wellspring of the potency held by the many Sganagwai, including the killer-whale beings. Because the power is diffuse and abstract, it is rarely narrated as a character, yet it stands at the apex of the cosmological hierarchy the Haida described to early ethnographers.