Other services available are: 

Swimming pool services
Cleaning the intake of park fountains for a better cascade of streaming water.
Cleaning of golf course wells to improve irrigation system.
Search and Recovery.
Boat underwater hull cleaning / inspection.
Zinc Replacements.
Propeller changes. 
Underwater repairs (leaks, cracks, etc...). 
Underwater photography.
Underwater recovery of larger sunken items (boats, engines, cell phones, anchors, jewelry, etc...)