SRP311308 PRJNA704280 Gasterosteus aculeatus aculeatus Raw sequence reads DNA sequence reads of fish from bar-built estuaries. Samples taken at two time points to study how seasonal connection and isolation from the ocean affects genetic variation and look for evidence of parallel selection. Gasterosteus aculeatus aculeatus Preprint https://www.biorxiv.org/content/10.1101/2020.11.24.396291v1