This talk will explore struggles over access, entry, exclusion, and detention of migrants and asylum-seekers on islands. The islands are located along the peripheral edges of sovereign territory where migrants try to land, work, and seek asylum. Far from peripheral, migration-related activities offshore are central to understanding dynamic configurations of sovereignty and asylum in the interplay between geography, law, and jurisdiction. Their location is also significant for border enforcement authorities, raising issues surrounding legality and legal status, precarity, governance, and the shifting global landscape of asylum.