A motile, rod-shaped, pink–orange pigmented bacterium, designated strain DW01^T, was isolated from the gut microflora of abalone collected from the South Sea (Republic of Korea). Cells were Gram-negative, facultatively anaerobic, catalase- and oxidase-positive. The major fatty acids were iso-C_15 : 0(17.7 %), C_16 : 0(13.4 %), iso-C_15 : 02-OH and/or C_16 : 1ω7c(12.5 %) and C_17 : 1ω8c(10.7 %). The DNA G+C content was 53.7 mol%. A phylogenetic tree based on the 16S rRNA gene sequences showed that strain DW01^Tforms a lineage of the genusShewanellaand is closely related toShewanella algaeATCC 51192^T(98.3 % sequence similarity) and to other members of the genusShewanella(91.0–94.9 %). The phenotypic characteristics and DNA–DNA hybridization relatedness data indicate that strain DW01^Tshould be distinguished fromS. algaeATCC 51192^T. On the basis of the data presented in this study, strain DW01^Trepresents a novel species, for which the nameShewanella haliotissp. nov. is proposed. The type strain is DW01^T(=KCTC 12896^T=JCM 14758^T).