Hatch Blue invests USD 2.5 million in seaweed supply chain platform Coast 4C

Hatch Blue invested USD 2.5 million in Coast 4C, a Philippines-based regenerative seaweed supply chain platform, to scale its digital service for smallholder seaweed farmers. The seed round totaled EUR 2.1 million (USD 2.5 million) and came from Hatch Blue’s Blue Revolution Fund, a EUR 92 million (USD 104.6 million) vehicle focused on sustainable aquaculture investments. Hatch Blue said the platform links farmers with global buyers while providing technical support, inputs, and market access to deliver consistent supply of carrageenan, a seaweed-derived ingredient used in cosmetics, foods, and pharmaceuticals. Coast 4C plans to use proceeds to reach breakeven ahead of a Series A, initially expand across Southeast Asia, and extend its farmer network and digital traceability rollout. Co-investors included Conservation International Ventures, Elea, RS Group, and Minderoo Foundation, among others. The funding was announced during Earthshot Prize Impact Assembly at London Climate Week. Coast 4C was an Earthshot Prize 2024 finalist.