The Ainu people of Hokkaido recount the demiurge with a cosmology consisting of six heavens and six hells where gods, demons, and animals lived. Demons lived in the lower heavens. Amongst the stars and the clouds lived the lesser gods. In highest heaven lived Kamui, the creator God, and his servants. His realm was surrounded by a mighty metal wall and the only entrance was through a great iron gate. Kamui made this world as a vast round ocean resting on the backbone of an enormous trout. This fish sucks in the ocean and spits it out again to make the tides; when it moves it causes earthquakes.
One day Kamui looked down on the watery world and decided to make something of it. He sent down a water wagtail to do the work. By fluttering over the waters with its wings and by trampling the sand with its feet and beating it with its tail, the wagtail created patches of dry land. In this way islands were raised to float upon the ocean.
When the animals who lived up in the heavens saw how beautiful the world was, they begged Kamui to let them go and live on it, and he did. But Kamui also made many other creatures especially for the world. The first people, the Ainu, had bodies of earth, hair of chickweed, and spines made from sticks of willow. Kamui sent Aioina, the divine man, down from heaven to teach the Ainu how to hunt and to cook.
Source: Japanese Creational Myths by Crystalinks