The contributions of Marine Protected Areas vary greatly depending on their size, age, types and intensity of resource extraction in their area and level of financial support for management. Taking India as a typical example, how modern legal rationality, especially with respect to conservation, is entrenched in the idea of territorial control, undermines the efforts of the forest department in seascapes, and triggers conflicts, is described. Marine conservation should be motivated by a non-territorial rationality and engage seriously with alternative approaches such as dynamic co-management and legal pluralism.