I realize there is a Dive Shop here called Scuba West but I think it’s important to have a different Unilocal profile for the venue itself because there are plenty(like me) who simply use the spot and pay a fee and bring our own tanks to dive there. Our interaction with Scuba West is minimal. Hudson Grotto is a great, great place to get specialty certifications. It’s dark, at times chilly, and deep. You can do navigation, limited visibility, and deep certifications here(I was already deep certified so I did the other two). Depending on the time of day you might get the place to yourself.