| SeaLifeBase |
| Callorhinus ursinus in California, USA | |
| Main ref. | (81300). Temte, J.L., 1985. Photoperiod and delayed implantation in the northern fur seal (Callorhinus ursinus). Journal of Reproduction and Fertility 73:127-131. |
| Status: | native |
| Abundance: | |
| Comments: | Established populations in Castle Rock (Ref. 1522) and San Miguel Island (Ref. 1522, 81300). |
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