Pew Bertarelli Ocean Legacy (PBOL) is a partnership with Dona Bertarelli working to establish world-class regional marine conservation networks in the Southern Ocean, Eastern Tropical Pacific, and the Mediterranean including a series of highly protected marine protected areas (MPA), interconnected by biological corridors, and underpinned by strong regional governance. PBOL builds momentum to establish protected area networks across large ocean areas, which interconnect beyond national borders. Working with local and international partners, PBOL seeks to ensure effective management of marine life and habitats both within and outside of MPA boundaries (including enforcement and monitoring within MPAs, and effective fisheries conservation outside), and set a foundation for the long-term durab