The publication features different chapters written by several key individuals who have played a vital role in PEMSEA's evolution over the years. Each chapter highlights PEMSEA's remarkable journey including milestones it has achieved, challenges faced and valuable lessons learned in the last two decades. With this, the publication also puts forward the directions and future prospects of PEMSEA as it transforms into a full-fledged and self-sustaining international organization in coastal and ocean governance in the EAS region.