These dataset contain supplementary data and codes supporting the morphometrics and statistical analyses for the publication entitled “Blue mussel shell shape plasticity and natural environments: a quantitative approach”:

1. Raw data (.rda, 3 files) for geometric morphometrics analyses with the Momocs (Bonhomme et al. 2014, J Stat Softw, DOI: 10.18637/jss.v056.i13) package with the R software;

2. Raw morphometrics data (.txt, 7 files) for morphometrics and statistical analyses;

3. Reports of R scripts and codes (.pdf, 4 files) in R-markdown format;

4. Supporting R script with utility codes (.R format, 1 file);

5. Description file providing additional information on data and codes included (.pdf, 1 file).

Data were collected as part of the EU Marie Curie programme, Calcium in a Changing Environment – Initial Training Networks (CACHE-ITN).