RESUMO
This article contains supplementary data from the research paper entitled "A newly discovered Gigantidas bivalve mussel from the Onnuri Vent Field on the northern Central Indian Ridge" [1], describes a new mussel species within the subfamily Bathymodiolinae named Gigantidas vrijenhoeki. Data are comprised of two parts: 1) shell image and molecular analyses of G. vrijenhoeki and 2) metagenomic community analyses of gill-associated symbiotic bacteria on G. vrijenhoeki. G. vrijenhoeki data were obtained from type specimens described in Jang et al. 2020 [1]. The molecular analysis was conducted by calculating genetic distance at intra- and inter-specific level within genus Gigantidas based on the sequence data of two mitochondrial genes (COI and ND4). The metagenomic dataset of gill-associated symbionts were generated by Illumina Miseq sequencing of the V3-V4 region of 16S rRNA from 12 specimens of G. vrijenhoeki collected from the same vent site, Onnuri Vent Field.