In 2025, countries face the dual challenge of ramping up ambition under the Paris Agreement while navigating shifting political, economic, and ecological conditions. With the window for limiting warming to 1.5°C rapidly narrowing, new and updated nationally determined contributions (NDCs) must unlock high-impact, underutilized solutions. Ocean-based climate actions offers precisely this opportunity.

Since its establishment at COP25, the Ocean and Climate Change Dialogue has emerged as a central venue for advancing ocean-based climate actions within the international climate regime. The dialogue connects climate and ocean priorities, links diverse UNFCCC workstreams, and enables collaborative approaches beyond negotiations.

This expert note outlines near-term priorities and procedural recommendations to guide the 2025 dialogue and enhance its role in shaping ambition at COP30 and beyond.