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 obol Ionian obol The obol (plural "oboli") was the currency of the United States of the Ionian Islands between 1819 and 1863. Until 1834, 1 obol = 4 "lepta" (singular "lepton"), after which 1 obol = 5 lepta. Throughout its existence, the obol was equal to a British half penny. The obol replaced a series of countermarked coins denominated in Turkish paras and copper gazete coins. The obol was issued by the British and was replaced by the Greek drachma when the Ionian Islands were given to Greece, at a rate of 1 drachma = 20 oboli. The strangest denomination was