Two earthquakes in quick succession on Sunday jolted the Ionian Sea and Islands in an area that has seen a spike in seismic activity over recent days.
The first measuring 4.4 on the Richter scale struck at 5:11 a.m. local time 78 kilometers (48 miles) south of Zakynthos.
The second which followed seven minutes later was stronger, measuring 5 on the Richter scale.
Its epicenter was 59 kilometers (36 miles) southwest of Zakynthos.
There are no reports of damage or injury.
Zakynthos was close to the epicenter of a strong 6.4-magnitude quake on Oct. 26.