Gigablue builds marine carbon dioxide removal (mCDR) technology that mimics the ocean’s natural biological pump by deploying its proprietary Microalgae Carbon Fixation and Sinking (MCFS) system. The approach grows microalgae that absorb atmospheric CO₂ and then sinks the biomass to sequester the carbon at depth. Its methodology was formally released by the Puro.earth Advisory Board in September 2025, giving the company a third-party framework for future credit issuance. Gigablue is integrating in-situ oceanographic data and environmental DNA sampling to strengthen monitoring, measurement, reporting, and verification (MMRV). The company targets hard-to-abate sectors such as AI and data centers, positioning its carbon removal units as infrastructure offsets. Financially, Gigablue closed the first $20 million tranche of its Series A in January 2026 and had previously received an undisclosed investment from SkiesFifty. The new capital will be used to scale MCFS deployments, expand deep-sea monitoring, and move toward commercial issuance of high-integrity carbon removal units.

Total raised

$20M

Funding rounds

1

Latest round

Series A

Latest activity

Jan 2026