This is a great little outfit to go with. I was unable to do the popular Manta Ray dive in Kona because of the altitude of where I was staying on the south-side of the Island (3,500 ft). I booked with the Nautilus Dive Center in Hilo just to get some dives in. We did a 2 tank shore dive going to about 50 ft (they did this for my safety so I could drive to the place I was staying a few hrs after diving). We saw 20+ giant sea turtles and numerous moray eels. The weather was a bit crapy, but it was still a great day of diving with these guys!