Delphinus phocoena Linnaeus, 1758 p.77; Type locality- Baltic Sea.
Phocoena vomerina Gill, 1865 p.178; Type locality- North Pacific.
P. phocoena: Kuroda, 1938 p.19 Kim et al., 2000 p.110; Kim, 2004 p.252.
Range: In Korea, P. phocoena occurs in the cold waters of the East Sea (Kim 2004; Fig. 109).
Remarks: A western Pacific stock has been identified as distinct from the eastern Pacific stock based on differences in the skull / jaw morphology and mtDNA (Shirihai & Jarrett 2006). Following these authors, the subspecies in the waters of Korea is the Eastern Pacific harbor porpoise, P. p. vomerina (Gill, 1865).