Schools on Santorini were closed and emergency crews were deployed due to increased seismic activity, raising concerns about potential earthquakes. Over 200 undersea earthquakes were recorded, prompting precautionary measures on nearby islands. Authorities urge citizens to follow safety recommendations. Experts indicate the quakes are not linked to the volcano but acknowledge the pattern is concerning. Residents express anxiety over the frequent tremors. Travel advice has been updated, advising caution in affected areas.