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Engineered RemovalPuro.earth✓ Prime Origins Vetted
Running Tide Ocean Carbon
Running Tide · Iceland
Running Tide grows macroalgae on biodegradable buoys seeded with alkaline limestone. The buoys sink to the deep ocean where carbon is stored on multi-century timescales while restoring ocean chemistry.
Project details
- Registry
- Puro.earth
- Project ID
- PURO-OCN-042
- Methodology
- Ocean Alkalinity & Biomass Sinking
- Vintage
- 2025
- Total issued
- 9,500 tCO₂e
- Available
- 3,200 tCO₂e
- Retirement
- Supported
Co-benefits
Ocean alkalinity restorationDeep-sea storage
SDGs:1314
Project location
64.1300°, -21.9500° — Iceland
Quality assurance
- Registered under Puro.earth — public serial numbers available
- Methodology: Ocean Alkalinity & Biomass Sinking
- Listing reviewed by Prime Origins for additionality, permanence and co-benefit substance
- Retirement certificate provided within 48h of purchase