Athens - Two undersea earthquakes, both with a magnitude of 5.0, struck southern and western Greece on Sunday with no injuries or damage reported, the National Observatory said.

The first quake occurred at 5:12 am (0312 GMT), about 70 kilometres southwest of the Ionian island of Zakynthos, followed more than two hours later by another quake about 41 kilometres southwest of the city of Pylos, in southern Greece.

Greece is Europe's most seismically active country and experiences many frequent earthquakes, accounting for half of the continent's recorded quakes. - Sapa-AFP