This essay reflects on the concept of “hydropower” – the corrosive power of seawater to amalgamate Life and Nonlife in the context of migrant deaths in the waters of the Mediterranean. Through a focus on drowned bodies’ dissolution and eventual sedimentation into their deep-sea surroundings, my approach interrelates the order of biopolitical violence enacted by Europe’s restrictive migration policies and the thick time of the geophysical. The degradation of bodies under the influence of hydropower reveals residual ontologies marked by porousness (...) between embodied forms of Life and their geophysical environments, putting significant pressure on the putatively watertight divide between Life and Nonlife in the Anthropocene. Parsed from the lens of residuality, hydropower reveals humans’ full ontological coincidence with matter writ large, their endurance and solubility in geological life forces, but also the necessity to think agency in terms of human/inhuman continuity in excess of biopower’s regimenting forces. Against the attempted biopolitical suppression of a certain form of humanity, the residual dwelling enacted by hydropower champions the inclusion of new constellations of matter in our political thought processes. (shrink)