Sea Cave® True Blue Carbon® credits and its cousin Blue Credit® have revolutionized the ocean health and blue carbon sectors. Sea Cave®
True Blue Carbon® represents a multi-faceted approach to atmospheric CO2 reduction and Blue Carbon by passively removing CO2 through macroalgae photosynthesis, dramatically reducing the carbon-emitting process associated with fishing behavior and calculating carbon stored in the reef biomass. Sea Cave® True Blue Carbon® comes with a built-in contractual assurance (a Blue Credit NFT) that for each verified True Blue Carbon® credit sold, at least 100 kg of marine life is generated.
Scalable Solutions
The International Marine Mitigation Bank (IMMB), with its NGO partner Fish Reef Project®, manages the Blue Carbon program. For every $2,000 in generated revenue, a 1,000 kg Sea Cave® is deployed in kelp or coral ecosystems. Each patented Sea Cave® generates five verified True Blue Carbon® credits per year and typically sustains more than 2,000 kg of healthy marine life, including giant kelp, coral, lobster, abalone, fish, scallops, sea cucumbers, sea fans, and much more.
Since its introduction, over 700 Sea Caves have been deployed and restored or enhanced large swathes of giant kelp forests in both California and Baja, Mexico. Tropical deployments in South Carolina and Papua New Guinea have yielded rapid benefits, with a new Senegal project coming online soon!
Biomass Targets
Each Sea Cave® True Blue Carbon® credit, in the current vintage, is verified by Earthood LLC and registered with the ICROA approved International Carbon Registry.
For each True Blue Carbon® credit that is sold, IMMB issues one no-cost Blue Credit® (marine biodiversity credit) to the same owner. Each Blue Credit assures its owner that 100 kg of marine life is generated on our Sea Cave® reef system. The credit owner simply looks at our annual online report, which professional science has proven to have met the biomass target. If there is a biomass shortfall, IMMB—at its own cost— expands the reefs until the biomass targets are reached. This is how we have simplified the overly complex marine biodiversity credit system.
A block chain contract (NFT token) is issued for each Blue Credit®. This binds the contract to deliver the biomass. The NFTs have their own potential value, and the owners can sell them at a later point in time.
Blue Credits can help companies that operate in offshore environments mitigate any environmental impact associated with day-to-day activities. Eager off-takers have already secured the entire first vintage of 2,444 of these rare and unique credits at $200. Early investors include 4Kelp™, a kelp-based men’s skincare company; Ocean Fathoms, a subsea wine aging company; CEMEX global, a building material entity; Teecino, an herbal tea company; and development banking consultant Dan Millison.
To find out more about Blue Carbon® credits, visit: www.fishreef.org and www.immb.us
This feature appeared in environment coastal & offshore (eco) magazine’s 2025 spring edition The Blue Economy, to read more access the magazine here.
