...Can you tell me what shop you did the Manta Ray dive with? I have only seen rays from a distance and very rarely in the Caribbean, so it will be a worthwhile trip for me just to see them, if nothing else!
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We used Big Island Divers for the Manta dive but many rave about Jacks Diving Locker as well. I have not done any diving on Ohau yet but it is on my list.