Gigablue Raises $20 Million to Scale Ocean-Based Carbon Removal Solution

  • Ocean health and climate solutions startup Gigablue announced that it has raised $20 million at the first close of its Series A financing, with proceeds aimed at scaling its solution to capture and remove carbon from the atmosphere, and store it deep in the ocean.
  • Founded in 2022, Gigablue designs and deploys a marine-based carbon dioxide removal method to capture and store CO₂ at large scale through natural marine processes, a methodology known as Microalgae Carbon Fixation Sinking (MCFS).
  • The company’s solution utilizes substrates comprised of naturally occurring compounds, on which photosynthetic phytoplankton absorb CO2 and convert it into biomass and, subsequently sink to the depths.

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Gigablue Raises $20 Million to Scale Ocean-Based Carbon Removal Solution