Since its launch in 2001, the PNLG has served as an effective forum for exchanging information and practical experiences, skills and management know-how on ICM practices among its members. In particular, study tours and the PNLG annual forum, which members take turns hosting, providing the necessary vehicles for mutual learning and mentoring within the PNLG network. The recognition that ICM practices lead to improved coastal governance and result in concrete, on-the-ground social, economic and environmental gains in the communities have motivated more local governments to join the network.

The network currently has 23 member local governments and 7 observer local governments from 9 countries across the region. The membership is expected to increase given PEMSEA countries' confirmation to scale up ICM coverage over the next three to six years. The members demonstrated their commitment towards sustaining the network when they adopted the PNLG Charter in Haikou City, PR China, on 13 December 2006 during the EAS Congress.

With the establishment of the PNLG Secretariat, hosted by Xiamen Municipality, the PNLG hopes to carry on its mission and serve as a sustainable network. The PNLG is open for membership to all interested LGUs and other stakeholders within and outside the East Asian Seas region.