This book re-imagines law as ecolaw. The key insight of ecological thinking, that everything is connected to everything else – at least on the earth, and possibly in the cosmos – has become a truism of contemporary theory. Taking this insight as a starting point for understanding law involves suspending theoretical certainties and boundaries. It involves suspending theory itself as a conceptual project and practicing it as an embodied and material project. Although an ecological imagining of law can be metaphorical, and can be highly imaginative and suggestive, this book shows that it is also literal. Law is part of the material ‘everything’ that is connected to everything else. This means that once the previous certainties of legal thinking have been dismantled, it is after all possible to think of law as ‘natural’ – as embedded in and emergent from a normative biophysical nature. The book proposes that there exists a natural nomos: animals, plants, and Earth systems that produce their own values and norms from which human norms and laws emerge. This book, then, proposes a new way to understand law, and pursues specific arguments to demonstrate the feasibility of law as ecolaw. Drawing inspiration from current trends in the post-humanities, socioecological thought, and developments across the natural sciences in their specific intersections with humanities and social science disciplines, this book will appeal both to legal theorists and to others with interests in these areas.