Sean Parker's massive $10 million wedding was a MENACE to sensitive fish and plants in Big Sur ... and he NEVER got proper permits for any of it ... so claims wildlife officials who have settled with the Facebook billionaire for $2.5 million. Parker struck the agreement with the California Coastal…

If you invested in Facebook, here's another reason to unfriend Fbook billionaire Sean Parker -- he's blowing nearly $9 mil to create a temporary backdrop for his wedding. We've learned Parker -- who made billions with companies like Napster and Facebook -- booked the entire ultra-swank Ventana Inn…