PlantSea

07/01/2026

Only 7 days left to invest before our public crowdfund closes 🚀

The support we have received so far has been incredible.
Our mission is so important to us and we are thrilled to welcome so many new investors and supporters joining us for the next stage of our journey.

There is one week remaining to get involved and to join us through Republic Europe.

https://europe.republic.com/plantsea

We’d like to ask you once more to continue to support us and spread the word.

Every penny makes a difference and takes us closer to our goal of eliminating plastics and creating a greener future 🌍

For more information, visit the link above.

Thank you

03/01/2026

Our dream is simple but ambitious: plastic-free laundry and dishwasher capsules available in every supermarket, at an affordable price.

2025 has been an incredible year for PlantSea, and we are hugely grateful for the support of our investors and community. Thanks to that momentum, we are now in overfunding, and the round remains open for those who would like to join us. We are excited to continue scaling in 2026 and to keep building sustainable materials that work in the real world.

Thank you for believing in what we are building.

Join our journey 👇

https://europe.republic.com/plantsea?utm_campaign=plantsea&utm_source=instagram_post

Approved by Republic Europe on 11/11/25

20/12/2025

As we look ahead to 2026, we’re growing the PlantSea team.
We’re working on replacing PVOH plastic in laundry capsules, and moving from development into real-world scale. That means we’re looking for people who want to build, test, problem-solve and help turn materials innovation into something that actually ships.

We’re currently hiring across:
• Business Operations & Development
• Research / Lab Management
• Bio-Polymer Chemistry
• Biorefining Engineering.
If you’re curious, thoughtful, and motivated by practical impact, we’d love to hear from you.
Please email us at [email protected] for more details and application forms.
Or apply directly here:
https://lnkd.in/eS6d757R

11/12/2025

We’re raising! 🚀

PlantSea is opening investment to the public through Republic (formerly Seedrs) - giving you the chance to own a piece of our mission to make greener choices effortless.

Our seaweed-based polymers are designed to replace plastics like PVOH, fitting existing manufacturing lines and matching in cost and performance.

Backed by £7.5 M in LOIs, FMCG trials, and patents pending, we’re scaling towards commercialisation, where we will displace thousands of tonnes of plastic and thousands of tonnes of CO2e.

Join our journey 👇

https://lnkd.in/eRDkzznu

Approved by Republic Europe on 11/11/25

19/11/2025

We are raising! 🚀

PlantSea is opening investment to the public through Republic Europe (formerly Seedrs) - giving you the chance to own a piece of our mission to make greener choices effortless.

Our seaweed-based polymers are designed to replace plastics like PVOH, fitting existing manufacturing lines and matching on cost and performance.

Backed by LOIs, successful trials, and patents pending, we’re scaling towards commercialisation where we will displace thousands of tonnes of plastic and thousands of tonnes of CO2e.

Join our journey 👇
https://europe.republic.com/plantsea/coming-soon

Approved by Republic Europe on 11/11/25

Thanks for your support!

11/03/2025

This International Women's Day, we're celebrating Angharad, our very first employee, whose dedication in the lab is driving our journey towards sustainability. In STEM, women often face unique challenges, but Angharad's perspective is invaluable. As she says, "As a woman, I bring a different perspective to the team which is valued and respected. Personally, the lab feels like a second home. Days filled with new developments, exciting opportunities, and being directly involved in the move towards a sustainable planet is amazing! Supported by great teammates turned friends, I feel empowered to grow in a fun yet professional environment at PlantSea." Angharad, thank you for your incredible contributions and for inspiring us all!

21/11/2024

We are thrilled to announce that PlantSea has been shortlisted as a nominee for the Inaugural BBIA Demeter Awards in the Start-up of the Year category! 🎉
This recognition is a huge milestone for us, and we couldn’t be more proud of the incredible team and our mission to revolutionise sustainable packaging. We are committed to innovating in the bio-based space and pushing the boundaries of what’s possible for a healthier planet 🌎.
A big thank you to our supporters, partners, and customers for believing in our vision. We are just getting started, and we can’t wait to continue growing with all of you.
Stay tuned for more updates, and let’s keep making waves together! 🌱

11/11/2024

This holiday season, send your warmest wishes with a purpose! Our Christmas Charity Greeting Cards are not only beautifully designed but also made with care for the planet. Printed on PlantSea seaweed paper using sustainable plant-based toner by , these cards help protect the environment while spreading joy. 🌱✨
 
💙 And the best part? 100% of the proceeds will be donated to , supporting marine conservation and protecting our precious sea life.
 
Send a Card, Save the Seas 🌊💌
Available now on PlantSea Etsy Store and SeaTrust Shop

31/10/2024

Send a Card, Save the Seas 🌊💌
Our beautifully crafted greeting cards are made from seaweed and 100% of the proceeds go to support . Each card helps protect marine life. Perfect for any occasion!
They are designed by , Each card features a stunning cyanotype of seaweed, bringing the beauty of the ocean to life in a timeless, artistic way.

🌟 Why Choose Our Cards?
💌 Beautiful Designs: Unique, handcrafted illustrations.
❤️ Give Back: All proceeds go to Sea Trust.
🌍 Eco-Friendly: Printed on seaweed paper with plant based toner.
📬 Perfect for Gifting: Show your loved ones you care while supporting a great cause.

Now available on

09/09/2024

We’re thrilled to announce that we will be at London Packaging Week 2024! 🎉 Join us at Booth H82 to discover our innovative, sustainable packaging solutions that are set to revolutionise the industry.

30/08/2024

We are thrilled to have closed our pre-seed funding round!

Emerging biotech start-up, PlantSea, is turning the tide on plastic pollution 🌊

The company have successfully closed a significant funding round totalling over £800,000, including an equity investment of £220,000 from us.

Using sustainably sourced seaweed from Scotland, PlantSea has developed a unique bio-refining technology to produce a ground-breaking water-soluble seaweed-based flexible film that holds both liquids and dry products such as laundry detergents. Our investment will be deployed to accelerate product development with key multinational customers in the laundry and cleaning sectors. PlantSea’s product portfolio also includes biodegradable mulch film and seaweed-infused paper.

‘We started our journey while at Aberystwyth University, a place that influenced our shared love for the ocean. We are now poised to make a significant difference by offering alternatives that are not only sustainable but also economically viable. The support of our funding partners means that we can continue with research and development to move beyond laboratory-scale production and start taking our products to market,’ explained CEO Rhiannon Rees.

Find out more: https://ow.ly/6JN050T9EZ5



PlantSea . Friends of the Earth Cymru / Cyfeillion y Ddaear Cymru . Climate Cymru . GwyrddNi . Green Economy Wales . Business Wales . Business News Wales