Captura Corp. is a Pasadena, California climate-technology company commercializing Direct Ocean Capture, a process that removes CO2 directly from seawater so the ocean absorbs more CO2 from the atmosphere. The technology was invented at Caltech by professors Chengxiang Xiang and Harry Atwater and is built on a proprietary bipolar membrane electrodialysis platform that uses only seawater and renewable electricity, with no chemical additives or by-products. Captura manufactures its electrodialysis stacks in Pasadena and operates a 1,000 tonne-per-year pilot plant in Hawaii. It sells durable carbon-removal credits and has been backed by Aramco, Equinor Ventures, Hitachi, Frontier, the U.S. Department of Energy, and an XPRIZE Carbon Removal award.