Together with four smaller islets (Tirasia, Nea Kameni, Palea Kameni, Aspronisi), it forms a small archipelago called Santorini, located in the Cyclades.
The International Hydrographic Office in Monaco divides the Mediterranean Sea into the western and eastern basins.
The western basin includes the Alboran, Balearic, Ligurian and Tyrrhenian Seas, while the eastern basin includes the Ionian, Adriatic, Aegean and Icarian Seas.
The final blast of the 1883 eruption generated a force 10,000 times stronger than the one generated by the atomic bomb dropped by the Americans on Hiroshima in 1945.