Origin: Native American mythology
According to the myth, in the beginning there is only the Great Water, and birds have no place to land and rest. Turtle, the Earth Diver, swims to the bottom of the sea and retrieves some mud. The mud begins to expand, and becomes the first land. Soon there is so much land that only Grandmother Turtle may carry it. To this day the world is said to rest on the back of the turtle. In art it is depicted as a common turtle with sacred symbols decorating its shell.