Seismic activity around the Greek island of Santorini intensified on February 9, with a 5.0 magnitude earthquake recorded at 21:05, 15 km southwest of Arkessini, Amorgos, according to SKAI. The tremor was the strongest since the 5.

Greece has declared a state of emergency on Santorini because of the hundreds of undersea earthquakes that have shaken the resort island for nearly a week.

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