Question

Which sentences in the story indicate that it is an ex nihilo type of creation story?

Answer 1

The creation story which is represented in the passage "ex nihilo earth diver world parents emergence" can be summed up as creation from nothing. In other words, the earth was created from nothing. 
For the purposes of this discussion, the creation story is a cultural, traditional or religious story  which describes the origins of the present world.
Creation Ex Nihilo is a common creation story and is found in the creation stories from Ancient Egypt, the Bible and the Quran.