Molecular characterization of deep-sea bathymodiolin mussels and gill symbionts from the U.S. mid-Atlantic margin

These datasets provide geographic sampling information for Bathymodiolin mussel samples collected from three cold seep sites off the mid-Atlantic U.S. coast, northwestern Atlantic Ocean. Also included are GenBank accession numbers for mitochondrial gene sequences (COI and ND4) used to identify the mussel species and GenBank accession numbers for BioProject containing 16S metabarcoding sequence data used to identify gill symbionts in mussels.