| Predator name | Halichoerus grypus | Main Ref. | Pierce, G.J., A. Miller, P.M. Thompson and J.R.G. Hislop, 1991 |
| Predator group | Phocidae | Predator stage | juv./adults |
| Predator I | mammals | Predator II | seals/sea lions |
| Prey stage | juv./adults | ||
| % of stomach contents | - | ||
| Locality | - | ||
| Country | UK Scotland | ||