Spatial genetic patterns of Octopus vulgaris in the Mediterranean Sea

octovul_630.fas: Full data set in FASTA file format containing 860 partial sequences of the Cytochrome c oxidase subunit I (COI). Data set was assembled merging new sequences (458) with those available on Genbank. Sequences were trimmed to a length of 621 bp.octomed.fas: Full data set in FASTA file format containing 782 partial sequences of the Cytochrome c oxidase subunit I (COI). Data set was assembled merging new sequences (442) with those available on Genbank. Sequences were trimmed to 500 bp length.monthly_currents_Jul_Dec_1998_2015.nc: data set in netCDF file format of monthly averaged mean marine currents. Data set encompass the period from July 1998 to December 2015 and contains only months covering the reproductive and recruitment period of Octopus vulgaris in the Mediterranean (July to December). The file was generated by modifying data set of monthly mean marine currents available at European Union (EU) Copernicus Marine Service Information ((http://marine.copernicus.eu/). Monthly mean currents over the period here considered were downloaded by Mediterranean Sea physical reanalysis (MEDREA 1987-2015) dataset, whose model horizontal grid resolution is 1/16˚ (about 6-7 km). The resulting netCDF file was uploaded within the R 3.5.2 statistical environment (R Core Team 2015) using the library ncdf4 1.17 (Pierce 2019) and it was cropped in order to contain only months from July to December. The R script to crop the data set is available upon request by the author