Similarities in creation

It seemed to me like our creation myths all touched upon each of the 4 common themes, and as Prof. Sexton pointed out, we had more than a few earth diver myths.
One of the things that jumped out at me for those was how there were at least 2-3 in which a duck was the animal to dive and retrieve the earth.
I was also surprised at how many of the myths encompassed a reason to why there were different colored peoples populating the world.
Another common theme was water, almost every one of the myths had some symbolic use of water, be that it was the great nothingness, or that it flooded the world creating new beginnings, or that a primordial beings tears created the earths water.
It also intrigued me that only middle earth earth was created by kick as beats, and I would have loved to have recorded that performance because it was great!