Molecular diversity of North Pacific deep-sea Pseudotanaidae
This study comprises mitochondrial cytochrome c oxidase subunit I (COI) sequences from deep-sea Pseudotanaidae (Tanaidacea, Peracarida) collected across the North Pacific region, including abyssal plains and hadal trenches. The dataset is intended to document molecular diversity, geographic and bathymetric structure, and lineage diversity in deep-sea Pseudotanaidae. Samples originate from multiple expeditions and depths and are associated with specimen and station metadata to enable phylogenetic and biogeographic analyses.