Kepulauan Seribu was designated as a marine protected area to promote and protect a healthy marine ecosystem and its biodiversity. However, despite numerous efforts to protect the area, the park continues to be impacted by both external and internal factors. External factors include domestic sewage, vessel traffic, industrial effluent, and urban run-off from metropolitan Jakarta. Meanwhile, internal factors include the problems created by tourism development and the impacts of the economic activities of the park's residents. The ongoing political and economic crisis in Indonesia, which has plagued the country since 1997, has amplified the pressure on the resources and on the well being of the park. This study traces and analyzes the intrinsic causes of the internal problems using a socioeconomic perspective. We suggest that alleviation of poverty and marginality of the park's residents should be prioritized, and that park management should be based on consensus building and participation of all stakeholders.