_:genid1 "Copyright protected. Obtain permission from the original figure source."^^ . "overview-shells-dissolve-in-acidified-ocean-water" . "1."^^ . "Shells Dissolve in Acidifed Ocean Water"^^ . "(left) Bednaršek et al. 2012; (right) Nina Bednaršek"^^ . "Pteropods, or “sea butterflies,” are eaten by a variety of marine species ranging from tiny krill to salmon to whales. The photos show what happens to a pteropod’s shell in seawater that is too acidic. On the left is a shell from a live pteropod from a region in the Southern Ocean where acidity is not too high. The shell on the right is from a pteropod in a region where the water is more acidic. (Figure source: (left) Bednaršek et al. 2012 (right) Nina Bednaršek)."^^ . _:genid1 . . . . . . . . . . _:genid2 . _:genid2 . _:genid2 . _:genid2 . _:genid2 .