Indonesia’s marine protection plan is one of the most ambitious ocean commitments any nation has made — a two-phase expansion that would eventually shield nearly a million square kilometers of some of Earth’s most biodiverse waters. The country’s eastern seas sit within the Pacific Coral Triangle, home to more reef fish and coral species than anywhere else on the planet. Experts are cheering the target while urging the government to prioritize genuinely effective, community-centered management over coverage alone. If Indonesia gets this right, it could become a model for tropical nations across the Indo-Pacific.