Which monster in "Monster Hunter Tri" was causing earthquakes in Moga Village?

In Monster Hunter Tri, the monster causing earthquakes in Moga Village is Ceadeus. Ceadeus is an Elder Dragon species that resides in the underwater area known as the Abyssal Volcano. As it moves through the water, Ceadeus emits powerful vibrations that create shockwaves strong enough to cause earthquakes on land. These earthquakes not only pose a threat to the safety of the villagers but also disrupt their daily lives and livelihoods. Therefore, the hunters in Moga Village must take on the challenging task of defeating Ceadeus to restore peace and tranquility to their village.