The Greek island has a long history of earthquakes, but what is causing the recent series of quakes has scientists perplexed.

Residents and tourists on the Greek island of Santorini have been put on high alert after an increase in seismic activity.

Thousands of residents, seasonal workers and tourists have left Santorini and its neighboring islands after a spike in seismic activity since Jan. 31.

Hundreds of earthquakes that have rattled the Greek islands since last week have prompted the evacuation of thousands from the tourist hotspot of Santorini.

Thousands of residents are fleeing Santorini after hundreds of earthquakes were recorded near the Greek island in the last 48 hours. About 9,000 people have left the island since Sunday, with additional emergency flights scheduled to leave on Tuesday.