Repeated earthquakes are rattling Greece’s volcanic island of Santorini. Scientists say the quakes aren't related to a slight increase in volcanic activity that has also been registered recently.

A 5.3 magnitude earthquake struck near Santorini, Greece, the latest in a series of temblors near the popular tourist destination.

Santorini, often called Greece’s "Instagram Island," is famous for its whitewashed buildings and breathtaking caldera, a volcanic crater created by one of the largest known eruptions around 3,600 years ago.