Overview

• Gigablue’s transaction with SkiesFifty represents the largest-ever sale of ocean-based carbon credits by a climate startup, symbolizing the removal of 200,000 metric tons of CO₂.
• The National Institute of Water and Atmospheric Research publicly endorsed Gigablue’s methodology as scientifically sound and praised its carbon sequestration measurements.
• Independent marine scientists have raised concerns that limited sunlight could impede algae growth on the sinking particles and that particles may be consumed by bacteria or fish.
• Gigablue has kept its particle formulations proprietary, though permit documents reveal mixtures of vermiculite, ground rock, plant waxes, manganese and iron.
• The nascent ocean carbon removal sector remains lightly regulated and experts are calling for stricter oversight and peer-reviewed validation of emerging technologies.