Adriatic Sea southeast, the Adriatic Sea connects to the Ionian Sea at the wide Strait of Otranto. The International Hydrographic Organization (IHO) defines the boundary between the Adriatic and the Ionian seas as a line running from the Butrinto River's mouth (latitude 39°44'N) in Albania to the Karagol Cape in Corfu, through this island to the Kephali Cape (these two capes are in latitude 39°45'N), and on to the Santa Maria di Leuca Cape (latitude 39°48'N). It extends from the northwest to the southeast and is wide. It covers and has a volume of . The Adriatic extends northwest from 40° to
Ionian League Ionian League The Ionian League (ancient Greek: , "Íōnes"; , "koinón Iōnōn"; or , "koinē sýnodos Iōnōn"; Latin: "commune consilium"), also called the Panionic League, was a confederation formed at the end of the Meliac War in the mid-7th century BC comprising twelve Ionian cities (a dodecapolis, of which there were many others). These were listed by Herodotus as After 650 BC Smyrna, an originally Aeolic city, was invited to diminish Aeolis and increase Ionia by joining the league, which it did. One of our earliest historical sources, the "Histories" of Herodotus, and early inscriptions refer to the legally constituted