Response: It is possible to measure the shell length of dead snails. However, comparing those measures to the size of snails that survived all the way to the end is problematic because the time period they were able to grow is different. Thus, the size of snails that died during the treatments could appear smaller even if their growth rate was the same when compared to individuals that survived to the end. This is the reason why we did not measure the size of snails that died. Further studies could follow snail growth over time with high resolution to get estimates of their growth trajectories. Such **data** could help to address the issue raised by the reviewer.