Occluded beneath oblivious pavements of far-flung global cities, the ebb and flow of the Pacific Ocean abides as a hydraulic system, source of life and breath, material resource, planetary nexus, site of plasticene and industrial waste: Anthropocene reminder. “Pacific becoming Oceania” reflects longings for biomarine sustenance and environmental endurance across this ocean figured broadly into ecological coalition. This ocean commons needs to be conceptualized as peril and promise, articulated at social and ecological levels that trace damage and potential. This Pacific Ocean (like the Empire-laden Mediterranean, Atlantic, Adriatic, and Indian oceans) has become filled with history, struggle, bloodshed, exploitation, ideological division, and projection, from Vietnam and Manila to Guam, Fiji, the Solomon Islands, Jakarta, and Pearl Harbor. As origin and frontier, the ocean becomes diversely figured and transfigured into primordial mother water and cargo lane, hydraulic matter and trans-species element, as “blue” consciousness and as integrating biosphere, alpha, and omega off the coasts of the Americas and Asia, as if some dream of trans-indigenous Oceania, or infrastructural apparatus and commercial ideologeme.