We performed a common garden experiment where juveniles of blue mussels with different historical contact with crabs were exposed to either a control environment, crab chemical cues, low pH (as a proxy for ocean acidification), or a combination of low pH and crab cue. After 120 days raising, we measured the final shell length, shell thickness, shell mass, tissue mass and shell strength of blue mussels.

In order to allow full comparability with other ocean acidification data sets, the R package seacarb (Gattuso et al, 2022) was used to compute a complete and consistent set of carbonate system variables, as described by Nisumaa et al. (2010). In this dataset the original values were archived in addition with the recalculated parameters (see related PI). The date of carbonate chemistry calculation by seacarb is 2024-01-26.