Hudson Grotto is a privately owned facility operated by Scuba West. It is only a 45 minute drive from St. Petersburg. Hudson Grotto is a shore accessible fresh water dive site, located at 6815 Tower Drive, Hudson, FL 34667. The maximum depth is 131-140ft/40-43m. The average visibility is 16-20ft/5-6m. Hudson Grotto is a well-known site for tec divers, but it is also a great spot to do open water dives or complete your Advanced Open Water Diver certification. We also offer specialty classes here such as Peak Performance Buoyancy, Underwater Navigation, and Search and Recovery!