Since 2018 SeaGrown has been pioneering an exciting new idea – growing sustainable, carbon-rich seaweed in the cold waters off the beautiful Yorkshire Coast. Growing seaweed in this offshore setting gives us the opportunity to help the oceans recover, and mitigate the climate crisis.

  • Scientists estimate that acre-for-acre, seaweed is up to 20 times more effective at absorbing carbon from the atmosphere than woodland is onshore.

  • At the same time as absorbing tons of carbon, seaweed releases oxygen into the surrounding water, uses up other excess nutrients and creates new habitats allowing marine life such as fish, mammals and birds to flourish.

  • The seaweed we grow can be used to sustainably manufacture products like biodegradable plastics, bio-chemicals, natural food additives, textiles, fertilisers and of course as a highly nutritious food source for our growing population. SeaGrown also uses our farmed seaweed to produce sustainable food seasonings and bath products.

Our ambition is to help the ocean to turn the tide on climate change and keep itself healthy. We have developed a brand new method for seaweed farming which can stand up to the challenging open-water environment of the wild North Sea and allow us to produce ten times more seaweed than originally planned.

Our workboat, Bright Blue, has a brilliant local crew who work together to plant the seaweed, regularly check it, and harvest it once it grows. We have also built a seaweed hatchery on board our ship, Southern Star, where we can produce the seeds for the farm.


In August 2021 we launched our very first crowdfunding project entitled ‘Turning the Tide on Climate Change’ and on 8th September 2021 we successfully raised £27,834 with 207 supporters in 28 days.

Visit Campaign

With the help of our supporters, we will now be able to grow an extra 4 kilometres of seaweed on our ocean farm. This will represent an exciting step forwards for SeaGrown and will offer endless possibilities to other coastal regions to join us in our mission.

We are truly excited about this new way of working in harmony with our incredible coastal seas to safeguard our natural resources, enhance our marine environment and protect the planet. To give you an idea of the scale of the project, this extra 4 kilometres of seaweed would be enough to absorb the equivalent carbon dioxide emissions from:

  • Heating more than 20 houses for a full year...

  • More than 200 flights to Spain...

  • More than 4000 trips by car to the Yorkshire Coast from Leeds!

We have already begun our seeding program in earnest and the first part of the extra 4km of seaweed line is now in the water on our farm site with much more to follow shortly.


Together, we have taken a large and positive step forward towards turning the tide on climate change.