Greek Prime Minister Kyriakos Mitsotakis has urged calm on Santorini following increased seismic activity, with over 280 earthquakes recorded in 48 hours. Schools are closed, and large gatherings are discouraged. Residents, including tour guide Kostas Sakavaras, are taking precautions, with some leaving the island. Authorities emphasize that the tremors are minor and related to tectonic movements, not volcanic activity. Precautionary measures are in place to ensure safety, and tourism is affected as cancellations rise.