Hi there! My husband and I are going to Kona on the Big Island of Hawaii mid-August. We plan to shore dive most of the time to keep our costs low... However we've been told several times that the Manta night dives are an absolute must. We really want to do it! However we've also been told to be careful, because there is a season for Manta Rays. I do realize that there are no guarantees at any time, this is just the way of underwater life. However, if August is not commonly a time for Manta Rays, then we will save the small fortune it will cost us to take the Manta dive and rent some extra tanks instead! Does any one know if there actually is a season for Manta Rays in Kona?