Turning the Tide A Financier's Guide to Investing in Blue Carbon Ecosystems 2026

Conclusion and recommendations3 The investment case for blue ecosystem restoration and conservation is both urgent and viable. Healthy coastal and marine ecosystems underpin climate and economic resilience and community livelihoods across the globe. Yet despite their outsized value, they remain significantly undercapitalized. This report demonstrates that scaling private investment into blue ecosystems is not a matter of creating a new asset class, but can be achieved through alignment of financial instruments, enabling policy and building a credible pipeline of projects. Four financing avenues, namely credit markets, supply chains, infrastructure and insurance, offer investors the most scalable and advanced entry points. Each avenue varies in maturity, risk profile and ticket sizes, but together they form a spectrum of investable opportunities to restore and conserve blue ecosystems. Credit markets channel the climate and biodiversity value of healthy blue ecosystems into measurable and tradable financial instruments.Supply chains can embed blue ecosystem stewardship within sustainable aquaculture commodities. Coastal resilience and ecosystem health integrated into infrastructure investment decisions strengthens asset longevity and safeguards its returns. Insurance leverages risk-transfer instruments to protect and finance restoration. Collectively, they translate ecological benefits into economic value through established financial mechanisms. Each of the four financing avenues explored in this report offers opportunities for financial institutions to play a role in enabling, structuring and directly financing projects and enterprises, with each role offering a different degree of control and influence over project activities and outcomes. A call to action TABLE 16 Financing avenues Credit markets Supply chains Infrastructure Insurance Direct finance Provide project-level loans or equity to blue carbon project developers; invest in blue carbon funds; forward purchase verified credits.Offer sustainability-linked loans or working capital to businesses, tied to verified environmental performance in blue carbon ecosystems.Provide project-level long- term debt capital to hybrid infrastructure projects that incorporate blue carbon ecosystems for risk resilience benefits.Underwrite or invest in insurance products linked to blue carbon ecosystems. Structured finance Structure pooled vehicles to aggregate multiple small projects for institutional investors.Structure trade-finance programmes with concessional partners for sustainable aquaculture or seafood production.Underwrite or issue blue bonds with a meaningful portion of proceeds allocated toward blue carbon ecosystems.Develop and structure blended finance facilities for blue carbon ecosystems with credit enhancement through insurance components. Enabling finance Use philanthropic or grant funds to support early-stage project preparation, MRV capacity and development of SMEs.Fund technical assistance for SMEs to meet certification or traceability standards.Provide technical input, de-risking or concessional support for early feasibility studies and design standards.Support valuation studies, modelling and enabling data systems to quantify risk reduction benefits of blue carbon ecosystems. Turning the Tide: A Financier’s Guide to Investing in Blue Carbon Ecosystems 24