Comprehensive examination of the state of the Indo-Pacific's biodiversity and habitats, moving beyond endangered or charismatic species to quantify for the first time the number of mammal and bird species, including endemics, in each ecoregion. Chapters describe the biological distinctiveness and conservation status of ecoregions, quantifying the amount of habitat remaining, how it is distributed, and how much is protected. The analysis concludes with a set of ecoregions that deserve immediate attention and also highlights ecoregions that are still in relatively pristine condition.