[1] Administratively, Yarok Island is part of Ust-Yansky District, Sakha Republic (Yakutia), Russia.

[4] The Chondon bay, the coastal area off which Yarok Island lies, is an extensive wetland zone.

Further north, the sea in the Yana Bay is frozen with thick ice for about eight months every year, so that Yarok is merged with the mainland.

[6] In 1712, Yakov Permyakov and his companion Merkury Vagin, the first recorded Russian explorers of the area, crossed the Yana Bay from the mouth of the Yana River to Bolshoy Lyakhovsky Island over the ice and explored the then unknown island.

[7] In 1892–1894, Baron Eduard Toll, accompanied by expedition leader Alexander Bunge, carried out geological surveys in the Yana delta area on behalf of the Russian Imperial Academy of Sciences located in St. Petersburg.