What do you mean by the fact that you cannot see? If it's the rustling grass you're unable to see clearly, then unfortunately there's nothing that one can do to fix that issue. However, if you are talking about the fact that you're not seeing or encountering any wild (normal or shiny) Beldum then the swarm has most likely subsided. You can check with Dawn to see if this is so. :)
Have fun and good luck!