_:genid1 "Copyright protected. Obtain permission from the original figure source."^^ . "ocean-acidification-reduces-size-of-clams" . "24.3"^^ . "Ocean Acidification Reduces Size of Clams"^^ . "Talmage and Gobler 2010"^^ . "The 36-day-old clams in the photos are a single species, Mercenaria mercenaria, grown in the laboratory under varying levels of carbon dioxide (CO₂) in the air. CO₂ is absorbed from the air by ocean water, acidifying the water and thus reducing the ability of juvenile clams to grow their shells. As seen in the photos, where CO₂ levels rise progressively from left to right, 36-day-old clams (measured in microns) grown under elevated CO₂ levels are smaller than those grown under lower CO₂ levels. The highest CO₂ level, about 1500 parts per million (ppm; far right), is higher than most projections for the end of this century but could occur locally in some estuaries. (Figure source: Talmage and Gobler 2010)."^^ . _:genid1 . . . . . . . . . . . .