I did not get to dive Rangiora or Riatea so my impression of diving in Polynesia may be unjustly skewed in the negative direction. Aside from diving the Manta Ray cleaning station at Bora-Bora, I found the diving in that area to be far less impressive than diving in the prime Caribbean locations. Had I gone to Polynesia primarily for diving, I would have been disappointed, and found it to be a very long way to travel for some less than stellar diving (manta ray dive excepted). With full disclosure, I certainly did not see very many dive sites on our Paul Gauguin cruise, and there are likely many dive locations that had better diving conditions than what I experienced.