How did the animals spread out over the world after the flood (How did land animals cross the water) (i guess this is also a question how they all got to the teiva) Was it a neis?
I’ve heard different answers from not Jewish sources, but I’m wondering if there’s any seforim which deal with this.
I once heard that the zohar says that the continents only shifted after migdal bavel. Where exactly would I find this zohar?
The Zohar you are looking for is perhaps זוהר החדש בראשית דף כא-א. As a side point you might want to see he following link https://www.hidabroot.org/video/213391