This video to the best of my knowledge is animated by modelling actual data obtained from actual observations, so it is not an animation of someone’s imagination. These are happening in every cell in your body, every moment of your life:
The entire animated entities are surrounded by the intra-cellular water which the animation does not show.
Specially see this excerpt from the video:
These are Ishara, pointers pointing towards a direction. So it is lesser about the questions “why I am here” or “what is the purpose of life”, but more about what are we pointing at? Or Who are we pointing at?
More about seeing, less about knowing.