Several groups of islands and atolls in the southern Pacific Ocean are collectively known as French Polynesia. The Society Islands which includes Tahiti, Boro Bora, and Moorea are the largest and of volcanic origin. Of those, Moorea is my favorite. I found the Marquesas Islands to be the most interesting. Only six of the twelve Marquesas Islands are inhabited. The two, Hiva Oa and Nuku Hiva that I visited, have beautiful mountains and valleys.