As our one ocean becomes more acidic, what will the impacts be? This unit is split into three lessons. Lesson one focuses on the marine food chain, and on the fact that many creatures that form the base of this food chain will be negatively impacted by ocean acidification. The resources in lesson two are focused specifically on coral reefs, and on their precarious future in a more acidic ocean. Lesson three ties the first two lessons to human beings. How will ocean acidification affect our daily lives?