Supplementary Figure 1 from <i>In situ</i> developmental responses of tropical sea urchin embryos to ocean acidification conditions at naturally elevated <i>p</i>CO<sub>2</sub> vent sites

Seawater pH<sub>(T)</sub> measurements at control and vent sites for Dobu Island (A) and Upu-Upasina (B). Measurements are made using a seaFET pH/temperature logger that was moored at 2 - 3 m depth