Surabhi Ranganathan is a professor of law at the University of Cambridge. Her current work traces the co-constitution of international law and the ocean from 1945 to now, unsettling what we take as the givens in relation to the spatial zones, resource allocations and functional jurisdictions effected by the law of the sea. It extends the history and critique of international law into new areas, such as ocean depths and bottoms, global commons, marine infrastructures, and techno-utopian imaginaries, and, from the underexplored vantage point of oceanic law-making, throws new light on current preoccupations of international legal histories: statehood and territory, decolonization and the new international economic order, the Cold War, race and empire, and the emergence of new legal forms and institutions.