In less than two decades, large marine protected areas have become an increasingly important strategy in attempts to sustain ocean life threatened by climate change, overfishing, marine pollution, and other impacts (Toonen and others 2013; Wilhelm and others 2014). Proponents claim that over 80 percent of all protected marine space now exists within large areas that measure in the hundreds of thousands to millions of square kilometers (Toonen and others 2013). Pacific Island countries have been global leaders in this movement to design ocean stewardship at scale and have used these achievements as evidence that Small Island Developing States are better thought of as Large Ocean States (Maclellan 2012). Pacific Island leaders such as President Anote Tong of Kiribati and Prime Minister Henry Puna of the Cook Islands have made political and moral declarations about the global significance of their nations' extensive marine territorial rights and cultural heritage of sustainability. These claims are evocative of Epeli Hau'ofa's well-known critiques of Pacific regional development paradigms and his argument that Pacific Islands are not small or isolated by the ocean but rather connected through it and the expansive practices of its residents (Hau'ofa 1994). However, despite the growing importance of large marine protected areas within and beyond Oceania, almost no scholarship exists about the particular cultural, social, and political processes through which they emerge. 1 In this ethnographic essay, I explore the inception of the Cook Islands Marine Park, a proposal to develop an approximately one-million-squarekilometer mixed-use marine protected area in the southern half of the Cook Islands exclusive economic zone (eez). 2 I begin to paint a clearer picture of what large-scale marine management means and what it can