Blue bonds: financing the health of the oceans

Blue bonds are a newer cousin of green bonds, focused on the seas and water. This guide explains what blue bonds are, how they work and how they differ from the broader green bond family.

Quick answer

Blue bonds are bonds where the money raised is set aside for ocean and water-related projects, such as sustainable fishing, clean water and protecting marine life. They work like other bonds, paying interest and repaying the principal, but focus specifically on the blue economy rather than green projects in general.

Key takeaways

• Blue bonds raise money for ocean and water-related projects.
• They focus on the blue economy, tied to the seas.
• They work like other bonds, paying interest and principal.
• They are a specialised branch of sustainable finance.
• They are newer and smaller than green bonds.

What are blue bonds?

Blue bonds are bonds where the money raised is committed to ocean and water-related projects. These can include sustainable fishing, protecting marine ecosystems, clean water and coastal resilience.

They are named after the blue economy, the idea of using ocean and water resources in a sustainable way. In most respects they behave like other bonds, with interest payments and repayment of principal.

How do blue bonds work?

When an issuer sells a blue bond, it commits to spending the proceeds on eligible water-related projects. As with green bonds, this usually comes with a framework and reporting on how the money is used.

Investors receive interest and repayment like any bond, along with the assurance that their money supports ocean and water goals. This appeals to those focused on this specific area of sustainability.

How are blue bonds different from green bonds?

Green bonds cover a broad range of environment-friendly projects, from clean energy to transport. Blue bonds are a narrower, specialised branch focused specifically on the oceans, seas and freshwater.

So you can think of blue bonds as a subset of the wider sustainable finance world, with a sharp focus on water and marine health rather than the environment in general.

Why are they gaining attention?

Oceans and water resources are vital yet under pressure, and financing their protection has become a growing priority. Blue bonds give governments and organisations a dedicated tool to raise money for this purpose.

They are still newer and smaller than green bonds, so the market is at an earlier stage. But interest is rising as sustainable finance broadens to cover more specific themes.

How should investors think about them?

Blue bonds let investors earn interest while supporting ocean and water goals. As with green bonds, they should be judged on their financial merits and risks, including credit risk and the effect of interest rates.

Investors should also watch for clear frameworks so the money genuinely supports water projects. Any investment decision should be your own after proper research and reading all related documents.

Frequently Asked Questions