It looks to me that someone needs to clean his lense on his camera. To have it this spotty is not the signs of a good photographer.
Now if the picture before or after this one did not have spots on it then it would be a totally different response. Having just one photo to go by makes it hard to make a real judgement call other that a dirty lens.
There are other web sights that do just show that but I am not sure what to think.
My tutor has some spots on some photos and they are consecutive and she pointed me to this site. I hesitate to dismiss all too fast but doubt roars loudly in my ears.
Reflections and so many things can be the cause along with the desire to see more then what actually is.