Most people, however, are far from being alkaline and are extremely acidic due to eating more acidic foods and less alkaline foods. (hairlossrevolution.com)
Modern plankton foraminifera become inhibited below pH 7.6 - 7.8, thus only if some of these species recover their ability to grow in less alkaline, CO2 - rich waters, then there will be no problem over the centuries to come. (realclimate.org)
They are slightly less alkaline over the last 100 years or so. (globalwarming.org)