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Finance for a Blue Planet

Green Sea Finance exists to offer debt funding to companies with a demonstrated commitment to the sustainability of our seas, lakes, and rivers.

OUR MISSION

Pioneering "Blue Finance"

Blue finance is a specialised branch of sustainable finance focused on the protection, restoration, and responsible use of marine and freshwater resources. Green Sea is dedicated exclusively to this space.


The health of the oceans is critical to the health of the planet. Yet the blue economy has long been overlooked by sustainable finance. In 2024, only 7% of green bond funding supported blue economy activities.


Green Sea Finance exists to help correct this imbalance. We understand that the businesses that make up the blue economy operate differently from other green sectors. They face unique challenges and opportunities that require tailored financial solutions.

Only 7%

of green bond funding supported blue economy activities in 2024.

WHAT WE DO

At Green Sea, we focus on commercially viable, nature positive businesses

We do not directly trade in nature credits, or carbon credits, or any other regulatory market. We look for great businesses first, whatever their model, and help them scale.

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As a debt fund, Green Sea is designed to work with businesses at a wide variety of development stages: from start-ups preparing to fulfil their first large purchase orders, to generational family businesses investing in the next decade. So long as the business is viable, and the benefit to nature is clear, we are interested.

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 Finally, investors in nature finance know that no single intervention is enough to restore an ecosystem. A small business debt fund is one of the few financial instruments that can deliver a large range of interventions from a single investment.

To build this new route for blue finance, we are working on four fronts:

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01

Blue debt funding

Our core offering is 5-year term loans to eligible blue businesses. These loans can be used to fund capital investment, acquisitions, and capacity growth to meet new purchase orders.

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02

Blue investment strategy

Until now, the only accessible blue investment options have been venture capital based. We are building a new route for investors: closed-ended, fixed income funds with clear ecosystem impact.

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03

Defining blue impact

Our impact strategy is focused entirely on marine and freshwater ecosystems. Every commitment we approve has a direct, positive, impact on the blue planet.

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04

Mapping the blue economy

A narrow range of financial tools has led to a narrow view of what is in the blue economy. Our research work has found hundreds of UK blue businesses from mussel farms to on-farm energy producers.

WHO WE ARE

Meet the team

Founder

Marcus Chenevix-Trench ran the Sustainable SME Finance Innovation Hub at the International Finance Corporation in Washington DC.

 

He has previously worked on water infrastructure in the West Bank and Gaza and as an energy analyst at TS Lombard investment research.

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Head of Credit

Andor Tihor has 13 years experience driving credit strategy in banks and fintech. Most recently he was Head of Credit Risk for iBanFirst where he scaled and led the team underwriting complex Corporate, SME, and FI exposures.

 

His record in corporate credit risk includes Citi, American Express, and MVMP Energy Trading.

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Head of Research

Chris Lack joined Seagrass from the World Bank, where he has focused on research, evidence synthesis and financing infrastructure investments in the West Bank and Gaza.

 

An expert in impact measurement, he has previously worked at
CARAS and the British Council.

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Opening a New Path for Investment into the Blue Economy

Contact us

If you run, or work with, a blue business in the UK and EU, we would love to hear from you.

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