aquilino: our first year of getting this program here at uc davis bodega marine laboratory, we only had about 30 total animals in captivity. our first spawning season, we created about 20 more. that wasn't going to save the species, but the next year, we created about 120, the year after that, a few thousand, and in this room, we have about 30,000 white abalone, well over what is left in the wild. we want as many as possible to survive in order to ensure the future of this species. hill: kristin aquilino is the lead scientist who has been charged with trying to bring the endangered white abalone back from the brink of extinction. the project has been remarkably successful, but an interesting thing to think about is that we know that abalone who are set free out into the ocean today are actually going to experience a different ocean in their lifetime than perhaps the abalone of 50 or a hundred years ago. and so part of what kristin is thinking about is, what does the future hold for those white abalone in the ocean? and part of that future is ocean acidification. ocean acidification is a