Figure 3

Frequency distribution of mean Sr:Ca ratio data outside the elver mark (150 µm in radius) of the giant mottled eel Anguilla marmorata collected at each sampling site. The dotted line in each panel indicates either the freshwater life period (<2.0 × 10−3 in Sr:Ca ratios) or the marine water life period (≥6.0 × 10−3 in Sr:Ca ratios).