Good experience. Not as many fish as anticipated but did get to see a shark. Seating a bit uncomfortable
The Atlantis submarine experience is definitely worth doing at least once. We went on the ride at Kona and should have scheduled it for Maui also, as they have a good discount for multiple trips. Just the experience of being in a submarine is unique and the scenery is interesting and fun. The tour leaders were entertaining and educational.
We saw lots of different kind of fish and everything was well explained--if you are not a scuba diver--this pretty much replaces the experience--but without the danger--and you see different fish, etc than snorkeling--it was totally worth the moola--we had a truly special experience.