| Predator name | fur seal | Main Ref. | Masuda, H., K. Amaoka, C. Araga, T. Uyeno and T. Yoshino, 1984 |
| Predator group | Phocidae | Predator stage | juv./adults |
| Predator I | mammals | Predator II | seals/sea lions |
| Prey stage | juv./adults | ||
| % of stomach contents | 65 | ||
| Locality | Waters off northern Japan | ||
| Country | Japan | ||