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CO2 Removal

Kelp has the potential to draw down more CO2 than terrestrial forests. By planting large scale kelp forests, we can both draw down large amounts of CO2 and boost marine biodiversity on a regional scale. 

As custodians of the planet we have a responsibility towards its preservation and protection. Excess CO2, ocean acidification and the destruction of marine ecosystems are just some of the areas where urgent action is needed. We believe cultivating kelp can be an important tool to address these issues, while creating meaningful employment in coastal communities.

At Kelp Blue, we are optimists.  

We consider how we want the world to look like for future generations, and we take action accordingly. 

How does kelp sequester CO2? 

Kelp is one of the fastest growing organisms on the planet and can grow up to 60 cm a day and reach lengths of over 40 meters. To fuel this rapid growth, kelp performs photosynthesis – powered by sunlight, kelp removes carbon and nutrients from surrounding waters, and stores them into various parts of the organism (the stipe, the fronds, the bladders, the holdfast). 

Kelp continuously releases organic material, some of which is minuscule and dissolves in water, called Dissolved Organic Carbon (DOC), and some larger material not able to dissolve in water. Any part of the kelp that breaks off and is visible to the eye is called Particulate Organic Carbon (POC). 

DOC released by the kelp is either immediately consumed by microbes or is transported out to sea where it sinks to the bottom of the ocean floor. Because the bottom of the ocean is unlikely to be disturbed and has very little human contact, the risk of the carbon being released is considered very low, and it can be considered sequestered for extended periods (>100 years, which is relevant for mitigating climate change).  

Still more carbon finds itself locked away in the bottom of the ocean when parts of the kelp become detached and breaks down. These fragments, often referred to as POC, travel out to sea – sometimes thousands of kilometers. Eventually the kelp detritus sinks to the ocean floor where it remains. As with POC, this carbon is sequestered in the deep sea and is unlikely to be cycled back to upper ocean layers or the atmosphere. 

Kelp Carbon Removal Pathways (1)

We’ve teamed up with The Kelp Forest Foundation to ensure the science and proof is there to support the carbon sequestration and biodiversity claims. The Kelp Forest Foundation aims to develop the framework for issuing verified Blue Carbon Credits for cultivated kelp forests, alongside valuing the many other ecosystem services of kelp forests. 

How is carbon sequestration by kelp forests a holistic solution to our planetary challenges? 

Kelp is an ecosystem engineer. An ecosystem engineer is any organism that creates and maintains a habitat and as such, has an enormous impact on biodiversity. Kelp forests provide habitats for innumerable marine organisms. Many fish species use kelp forests as nurseries for their young, while seabirds and marine mammals like sea lions and grey whales use kelp forests to shelter from predators and storms. 

Our Solution is:


– Kelp captures and helps sequester CO2, reversing ocean acidification. 

– Kelp forests attract and protect marine life.

– We will create jobs in coastal communities, producing beneficial products and profit for our investors.


– Kelp naturally grows at sea and is self-sufficient. 

– No pesticides or fertilisers are needed and no non-biodegradable waste is produced. 

– It has no adverse effect on the environment and requires no land which could otherwise be used for agriculture, housing, industry or infrastructure. 


– When done at scale, Kelp can be easily grown and harvested multiple times per year at minimal cost 

– All of our locations offer ideal growing conditions 

– Once planted, Kelp will keep producing and growing for many years 

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