In Ancient times, the island played a minor role during the Persian Wars. In 480 BC, the fleet of the Persian King Xerxes was hit by a storm and was badly damaged on the rocks of the Skiathos coast. Following this the Greek fleet blockaded the adjacent seas to prevent the Persians from invading the mainland and supplying provisions to the army facing the 300 Spartans defending the pass at Thermopylae. The Persian fleet was defeated there at Artemisium and finally destroyed at the Battle of Salamis a year later. Skiathos then became part of the Delian League. The city was destroyed by Philip V of Macedon in 200 BC.