This article argues that climate change has influenced the way in which small island nations are viewed and understood by the international climate community. Climate change has become an internationally recognized and specific language of vulnerability that is deployed in requests for international aid to fund adaptation and mitigation measures in some small islands, for population relocation plans and human rights advocacy in other islands, and for overhauling the 'tourism product' and creating new markets for travel in others. Vulnerability is a powerful idiom, especially in the contemporary climate context that has come to imply crisis, change, uncertainty, and immediacy. Importantly, vulnerability also gestures unambiguously toward seemingly limitless scientific and even commercial opportunity. These developments come with new forms of expertise in the natural and social sciences and the travel industry, as well as with new or reinstated forms of inequity. As the areas of small island expertise increasingly overlap, they come to reproduce the very context and form of small islands themselves.