| Referens | Rice, D.W., 1998 Marine Mammals of the World Systematics and Distribution. Special Publication number 4: The Society for Marine Mammalogy. 231p. |
| Ref. | 1522 Rice, D.W., 1998 |
| Sida | 29 |
| Named Used as Valid | Zalophus japonicus |
| Observationsplats | |
| Distribution | Japan, South Korea, Kuril and Kamchatka. |