| Predator name | Cerorhinca monocerata | Main Ref. | Wood, J.B. and C.L. Day, 1998 |
| Predator group | Alcidae | Predator stage | juv./adults |
| Predator I | birds | Predator II | sea birds |
| Prey stage | juv./adults | ||
| % of stomach contents | - | ||
| Locality | Monterey Bay, California. | ||
| Country | USA | ||