About 10,000 people have left on ferries and planes in recent days as hundreds of small quakes were registered in the surrounding sea.

The strongest earthquake recorded was magnitude 4.6 at 3:55 p.m. Sunday, at a depth of 14 kilometers (9 miles), the Athens Geodynamic Institute said.

Despite dozens of minor earthquakes in recent days, Greek scientists have ruled out a massive earthquake hitting Greece's Santorini island.