The story
From turtle + island, based on the role of a turtle's back acting as the base for the world while being surrounded by water in the creation stories of multiple tribes of the Northeastern Woodlands region of North America as well as Algonquian- and Iroquoian-speaking peoples. Specific groups with such myths include the Lenape people, the Haudenosaunee, the Ojibwe people, and the Cree.
Etymology from Wiktionary, CC BY-SA 4.0.