Oki islands

Country/territory: Japan

IBA criteria met: A2 (2004)
For more information about IBA criteria, please click here

Area: 34,800 ha

Wild Bird Society of Japan
IBA conservation status
Year of assessment (most recent) State (condition) Pressure (threat) Response (action)
2015 near favourable not assessed low
For more information about IBA monitoring, please click here

Site description (2007 baseline)
Oki islands are situated about 60 km off of Shimane Prefecture, consisting of four islands; namely Nakanoshima, Nishinoshima and Chiburijima that belong to Dozen Islands' group, the Dogo main island and the rest of other islets of more than 180. Oki islands have specific flora influenced by the Tsushima Warm Current and the Liman Cold Current. Dogo's main island is nearly round in shape and has Mt Daimanjisan (608 m) in its central area. Each of Dozen islands is almost trapezoidal in shape with the highest point of about 200 m above sea level, but Mt Takuhiyama (452 m) on Nishinoshima, is the highest point in the Dozen islands.

Recommended citation
BirdLife International (2023) Important Bird Area factsheet: Oki islands. Downloaded from on 03/12/2023.