Mammals of Korea: a review of their taxonomy, distribution and conservation status Author Jo, Yeong-Seok Author Baccus, John T. Author Koprowski, John L. text Zootaxa 2018 2018-11-19 4522 1 1 216 journal article 27944 10.11646/zootaxa.4522.1.1 58e0c7c5-75ec-4b1b-beb0-d01527f710f9 1175-5326 2610198 C24EFA8A-A5A0-4B06-A0A9-632F542B9529 Delphinus capensis Gray, 1828 —Long-beaked Common Dolphin Delphinus capensis Gray, 1828 p.2 ; Type locality- Cape of Good Hope, South Africa ; Kuroda, 1938 p.15 ; Kim et al ., 2000 p.96 ; Kim, 2004 p.242 . D. bairdii Dall, 1873 p.12 ; Type locality- Coast of California , US . Range: Delphinus capensis is readily observed along the east coast of Korea during spring and autumn with the peak of occurrence in spring; this dolphin rarely occurs along the coast of Korea in winter ( Fig. 103 ). FIGURE 103. Range map of Delphinus capensis in Korea. Remarks: All common dolphins were classified in a single species, D . delphis , until 1994. Heyning and Perrin (1994) , later confirmed by Kingston and Rosel (2004) , recognized two distinct species: the long-beaked common dolphin ( D . capensis ) and the short-beaked common dolphin ( D . delphis ). The taxonomic status of D . capensis has been further clarified in a morphometric study ( Jefferson & Van Waerebeek 2002 ). Delphinus capensis may be difficult to distinguish from D . delphis , especially at sea. The slender body and longer beak contrast with the shortbeaked common dolphin. The beak has a sharp demarcation from the somewhat flattened melon. The slightly muted coloration and a chin-to-flipper stripe, which often merges with the lip patch, thus darkening the lower jaw, is broader ( Jefferson et al . 2008 ). Since D. delphis is very rare in Korean waters ( Amano 2009a , b ), previous records of D. delphis in Korea were mostly D. capensis . The Subspecies, D . c . capensis Gray, 1828 , occupies the waters of Korea .