<p>Dokdo is a volcanic island with an island mass effect in the East Sea, which is called a “Miniature Ocean.” In this study, we identified the community structures and distribution patterns of meiofaunal communities inhabiting the depth range within the Infralittoral-Circalittoral Transition zone (ICTz) around Dokdo by comparing them with meiofaunal communities in the Infralittoral zone (Iz). Five stations in the Iz within a depth of 30&#xa0;m were surveyed in 2015, 2017, 2019, and 2020, and five other stations in the ICTz between a depth range of 50&#xa0;m and 100&#xa0;m were surveyed once or twice a year from 2021 to 2023. The results revealed that meiofauna density ranged from 94 to 1,068 individuals per 10 cm² (inds./10cm²) and contained 24 taxa. Cluster analysis revealed clear differences in the community structure between the Iz and the ICTz. Harpacticoid copepods and nematodes, respectively, dominated the Iz and the ICTz. The mean meiofaunal density was higher in the Iz (520 inds./10 cm²) than in the ICTz (304 inds./10 cm²). In contrast, the mean Shannon and Weaver’s diversity index (H′) calculated at the major group level was higher in the ICTz (1.67) than in the Iz (1.21), indicating a clear difference between the two depth zones. These differences showed significant correlations with the depth. In addition, the community composition of meiofauna in the ICTz was most strongly influenced by bottom salinity and mean grain size among environmental variables.</p>