Figure 5. Higher calcification and shell dissolution at lower pH.

Mean % ± s.e.m. relative calcification (%; (a,b)) and dissolution (%, (c)) in M. edulis 11 days old D-shaped larvae exposed to a 2 days treatment at pH 8.1 or pH 7.0 (a), then transferred to either the same (pH 8.1–8.1 and pH 7.0–7.0) or the other (pH 8.1–7.0 and pH 7.0–8.1) for 2 more days (b,c).