west coast have been unable to form shells the ocean is too acidic, eating at attempts to mould calcium carbonate to their bodies, a result of the surge in carbon dioxide levels. >> this is a hatchery building. >> reporter: mainland oyster farmers feel they have found a fix. a big hot tub. these tanks on hawaii contain millions of baby oysters, here they'll form shells before being exported to the north-west, armoured and growing into adults. >> these are six days owl. . >> reporter: some hawaii entrepreneurs are buying baby oysters in the hope of developing an industry here. >> this is the most isolated land mass in the world. we are a long ways from everything out here. >>> so you are safe from acidification. >> i don't know, i can't say that. >> reporter: there is reason for caution. marine biologists are seeing the impact of elevated co2 levels in hawaii as well. here it's not causing ocean acidification, but a rise in water temperature. >> nowhere is immune from the effects of climate change. just as in the north-west oysters have difficulty forming shells, in hawaii, corals have dity formin