We Revitalize Oceans
Our aim is to achieve affordable, sustainable, and scalable carbon capture through deep ocean seaweed cultivation and carbon sequestration.

Our Story
Adam introduced the idea for Fiora Mara during the Autumn 2023 ClimateBase Fellowship program, gathering a 14-member team to develop, validate, and refine the idea under the tagline: “Sinking Seaweed to Save the World.” The team collaborated with marine biologists, bamboo experts, and marine lawyers during the program culminating in a well-researched plan to bring the solution to market. Sunny continued from the original team to help bring the project to reality.
The Power of Seaweed
Seaweed has the natural power to extract carbon from the atmosphere and ocean permanently – in addition to other harmful pollutants. Our seaweed is sunk to the deep ocean floor where we ensure long-term carbon storage while contributing to the de-acidification of our oceans.
A 100-square-meter square seaweed farm absorbs 66 tonnes of CO2, 20 times more than a land-based forest of the same size.
Our Solution

Deploy Seaweed Farms
We release many small, 100% biodegradable, floating seaweed farms with seeded grow lines into the ocean. Our solution includes a “leaky buoy” that initially helps keep the farm afloat.

Growth Phase
As the seaweed grows, it absorbs significant amounts of green house gases such as carbon, nitrogen and phosphorous. Promoting local biodiversity while mitigating risk of oceanic dead zones.

Sinking Phase
Once the seaweed matures, the buoy fills with water and sinks with force, bringing the seaweed with it. At a depth of 2,000 meters, the carbon is sequestered at a rate of 96%, our farms sink beyond 10,000 meters.
Fiora Mara Updates
- Seaweed Plantlets on Grow Lines from Sorus – Success!At Fiora Mara, every milestone in our seaweed hatchery development brings us closer to our vision of large-scale ocean-based carbon removal. One of our most recent critical achievement has been …
- Fiora Mara Joins AirMiners Launchpad AcceleratorWe are thrilled to announce that Fiora Mara has been accepted into the AirMiners Launchpad Accelerator, a prestigious 6-week program developed in partnership with XPRIZE and Creative Destruction Lab. This …
In the News
- Climate Innovator – “600 Seconds With: Adam Ornstein, Founder & CEO at Fiora Mara”How Fiora Mara Is Using Seaweed To Combat Climate Change Original Substack post: 600 Seconds With: Adam Ornstein, Founder & CEO at Fiora Mara My name is Ed Thomas, with …
- 50+ New York ClimateTechs To Knowvia HackSummitThe following is quoted directly from the article October 01, 2024 Who are the startups and scaleups in New York to know? And what’s it like to build their startup …
Our Team

Adam Ornstein
Founder / CEO
Adam is the visionary leader and operating CEO. After researching the original idea, he organized and led the team since its inception and continues to facilitate all aspects of the company. Adam has a 20+ year track record as a product leader across multiple organizations including Everyday Health, Thomson Reuters, and WebMD. He is currently a member of Climate Reality Leadership Group.

Sunny Lad
Co-Founder / Engineering Lead
Sunny is our engineering lead. He brings 10+ years of product and engineering skills and experience in energy, finance, and insurance industries, launching tools to speed up website changes for underwriters at Zensurance and automating trading processes at HOOPP.

We are a member of the global seaweed coalition