I'm a diver but my husband doesn't dive/snorkel much, so this was a great opportunity for him to see some of the fish around Catalina. We saw sardines, halfmoons, kelp bass, opaleyes, and of course Garibaldi. You can purchase food that gets shot out of the boat like a canon, which attracts the fish. They're clearly conditioned to it and it is very entertaining. Vis wasn't great that day but the fish do cloud the windows so you're guaranteed to see something. The woman conducting the tour was a bit lackluster with not much energy, but we still had an enjoyable time.