The Kuril Islands or Kurile Islands (/ˈkʊərɪl/, /ˈkjʊərɪl/, or /kjʊˈriːl/; Russian: Кури́льские острова́, tr. Kuril'skie ostrova; IPA: [kʊˈrʲilʲskʲɪjə ɐstrɐˈva]; Japanese: クリル列島 Kuriru rettō, (千島列島, Chishima rettō)), in Russia's Sakhalin Oblast region, form a volcanic archipelago that stretches approximately 1,300 km (810 mi) northeast from Hokkaido, Japan, to Kamchatka, Russia, separating the Sea of Okhotsk from the North Pacific Ocean. There are 56 islands and many more minor rocks. It consists of Greater Kuril Ridge and Lesser Kuril Ridge.