The Vanuatu Meteorology and Geohazard Department said people on Efate have been experiencing a swarm of earthquakes this week.
At the beginning of the month, there were two seismic swarms recorded in the country.
One of the earthquakes happened South of Matthew and Hunter after a major event that triggered a tsunami, which travelled to the northern islands.
However, the shaking of that earthquake was not felt by the locals and the tsunami did not cause any damage or casualties to any lives.