User blog comment:Lord Loss/Monster Appreciation Day: Ceadeus/@comment-99.66.237.71-20130414041741/@comment-76.205.54.118-20130419021845

Not really. If you read Ceadeus' monster info, it slams its horn into the seafloor under Moga to whittle it down. The horn already grew over its eye, it's just trying to releave its pain. The earthquakes are a side effect.