The Greeks who were stationed at +Artemisium [23.2417,39.0083] (Perseus) Artemisium were informed of these matters by beacons from Sciathus. They were frightened by this and accordingly changed their anchorage from +Artemisium [23.2417,39.0083] (Perseus) Artemisium to +Chalcis [23.6083,38.4667] (Perseus) Chalcis, proposing to guard the Euripus and leaving watchmen on the heights of +Euboea [23.833,38.566] (island), Nomos Evvoias, Central Greece and Euboea, Greece, Europe Euboea.

Three of the ten barbarian ships ran aground on the reef called the Ant, which lies between Sciathus and Nomos Magnisias [22.75,39.25] (department), Thessaly, Greece, EuropeMagnesia. The barbarians then brought a pillar of stone and set it on the reef, and when their course was plain before them, the whole fleet set forth and sailed from +Thessaloniki [22.933,40.633] (inhabited place), Thessaloniki, Macedonia, Greece, Europe Therma, eleven days after the king had marched from there.

It was Pammon of Scyros who showed them where in the strait the reef lay. After sailing along all day, the foreign fleet reached Sepias in Nomos Magnisias [22.75,39.25] (department), Thessaly, Greece, EuropeMagnesia and the beach between the town of Casthanaea and the Sepiad headland.