Scientists from the University of Athens monitoring an earthquake swarm near the island of Santorini say the phenomenon is in “gradual decline” nearly a month after the multiple tremors started.

An earthquake swarm near the Greek island of Santorini is gradually declining a month after it began, according to scientists monitoring the phenomenon. The undersea shocks — sometimes recorded only minutes apart — led thousands of residents and workers to flee the famed clifftop towns of Santorini and the nearby islands of Ios,