This was such an amazing experience and one of the highlights of my entire trip. This was my first time reserving a tour via TripAdvisor, so I was nervous about its trustworthiness, but eventually I found all the good reviews about Hawaii Oceanic to be absolutely true. Finding the operation was a trick, however. There are MULTIPLE tour companies that leave from that harbor, and I had a very tough time trying to figure out which group was the right one. Once I got that straight, it was five stars the rest of the time. This is the perfect tour for someone who gets motion sickness (which I do), because the place where they stop is literally only a few minutes out. Seriously, it couldn't have been any more than 5 -- you turn a corner and you're there. And, of all the boats that were out there, I like think that we had the best turnout (our group seemed to elicit the most oohs and ahhs). I lost count of the number of mantas that approached us; they were everywhere! Some were enormous (possibly as wide as a car?) ... and inches from my face! They warn not to touch the mantas because it wears off their mucus layer, but they were totally the ones bumping into us! The water was choppy, but I felt very safe with our guide. (I think his name was Hunter? I'll call him that.) In fact, when another operator had a person who was starting to freak out from the choppy water, their guide called on Hunter to spot his group so that he could get the man back on their boat. Hunter also told us a great deal of information the entire time. It didn't come off as canned; it very conversational. All in all, I cannot recommend this outfit highly enough. If I ever go back to Hawaii, this tour, with this company, is definitely on my list of what I'd do again.