Dive Shack USA, Bullhead City

The Arizona desert may be the last place one would expect to find a scuba store and training facility, which makes Dive Shack USA an especially sweet discovery. Helmed by professional instructor and diving veteran Jerry Portwood, the facility houses a wide range of scuba gear, including fins, tanks, and wetsuits. Its biggest draw, however, is its diving certification courses and trips, which whisk divers off on adventures to places such as Catalina Island. Once there, aquanauts can practice their new-found skills while getting up-close glimpses of coral or teasing dolphins about their lack of opposable thumbs.