if you're going to fly all that way, i'd recommend you consider rangiroa in the tuamotu atolls of french polynesia. absolutely the best big animal, warm water diving i've ever done. wall to wall sharks, dolphins, manta rays etc. etc. it blows the caribbean and the rest of the warm pacific out of the water, the dives of a lifetime. imagine wolf and darwin in the galapagos but bathwater warm and gin clear visibility, if you want big animal action and sunshine it can't be beat.