Japan Airlines (JAL) has officially entered a tripartite agreement alongside Hitachi and Mitsui O.S.K. Lines to conduct Japan’s inaugural pilot test of Direct Ocean Capture technology. According to AeroTime, the collaborative effort was announced on August 4, 2026, and is slated to take place on Kume Island in Okinawa Prefecture.

The project utilizes a process designed to extract carbon dioxide directly from seawater. Containerized hardware will be deployed on land, drawing in seawater to strip away dissolved CO2 before returning the processed water to the ocean. The initiative aims to generate empirical data regarding operational efficacy, environmental impacts, and mechanical challenges within the Japanese coastal environment.

Project Parameters and Data

Each participant holds a distinct operational role. Hitachi is responsible for technical monitoring and the development of a data platform to verify carbon capture volumes, aiming to quantify the captured CO2 for potential carbon credit market applications. The participating companies are current investors in the US-based developer Captura Corp.

Why It Matters

The aviation and maritime sectors face significant hurdles in achieving net-zero emissions, as these industries remain difficult to fully electrify. By investing in Direct Ocean Capture, companies like Japan Airlines are attempting to diversify their decarbonization strategy. If successful, utilizing the ocean as a carbon sink—leveraging its natural equilibrium where seawater absorbs atmospheric CO2—could offer a more energy-efficient alternative to current Direct Air Capture (DAC) methods. This pilot serves as a critical test for integrating industrial carbon removal into corporate sustainability frameworks, potentially establishing a new standard for high-emission industries to address residual carbon footprints.