οἱ τότε ἤρχοντο εἰς τὴν νῆσον → they were then coming to the island
Ἀδρίας, -ου, ὁ. or see, ὁ κόλπος ὁ Ἰόνιος.
Of the Adriatic, adj.: Ἀδριατικός.