Islands--as well as entire continents--are reputed to have disappeared in many parts of the world. Yet there is little information on this subject concerning its largest ocean, the Pacific. Over the years, geologists have amassed data that point to the undeniable fact of islands having disappeared in the Pacific, a phenomenon that the oral traditions of many groups of Pacific Islanders also highlight. There are even a few instances where fragments of Pacific continents have disappeared, becoming hidden from view rather than being submerged. In this scientifically rigorous yet readily...