Since January 31, a series of undersea tremors have been recorded between Santorini and neighbouring islands, with the strongest- a 5.2-magnitude quake - striking on Wednesday night.
The Greek islands of Santorini and Amorgos have been rattled by earthquakes and tremors since Feb. 1, with the strongest being 5.3 on the Richter scale.
More than 200 undersea earthquakes have been detected near the Greek island of Santorini over the past three days, worrying Greek experts and island residents alike.