Greece’s government declared a state of emergency on Santorini on Thursday after hundreds of undersea earthquakes shook the resort island for nearly a week. The ministry of civil protection’s announcement will provide authorities faster access to state resources.

Past tsunamis have hit Israel’s coast, and with Santorini’s seismic activity at an all-time high, the risk of another wave is being taken seriously. Authorities remain on high alert, as the region watches and waits to see what happens next.

Experts say the Greek island of Santorini has been hit by more than 1,000 earthquakes, but they're not linked to the region's active volcanoes.