Leachates from PB1 and PB2 showed adverse dose-dependent effects on the development of D-veliger larvae.Compared to FSW, the deformation rates of larvae were significantly higher in plastic leachates at the concentrations from 0.5 to 10 g L−1.At the lowest concentration (0.05 g L−1), rates of deformation were lower in plastic leachates than in FSW (p > 0.05, ANOVA,).At 0.1 g L−1, the deformation rates were 0.05, ANOVA, Fig. 1B). Deformation rates at 0.5 g L−1 were 42% for PB1 leachates and 13% for PB2 leachates.At 1 g L−1, the deformation rates in PB1 and PB2 leachates increased to 80% and 44%, respectively.Significant differences were found between PB1 and PB2 leachates at 0.5 g L−1 (p