| Reference no. | Jefferson, T.A., S. Leatherwood and M.A. Webber, 1993 |
| Ecosystem | Magdalena Transition |
| Status | native |
| Abundance | |
| Lifestage | adults |
| Regional database | |
| Remarks | Known from Baja California (Ref. 1394). Reported as Phoca vitulina richardii in Isla Asuncion in Baja California Sur, and vagrant in Isla Guadalupe, Laguna San Ignacio (Ref. 1522). C: Refs. 1394, 1522, M: Ref. 1394, O: Ref. 1522. |