Data Zone
Country/territory: Japan
IBA criteria met: A1, A4ii (2016)
For more information about IBA criteria, please click here
Area: 82,227 hectares (822.27 km2)
Site description (2012 baseline)
This Marine IBA is identified using seaward extensions around breeding colonies. It originates from the Japan Exclusive Economic Zone (EEZ) and falls within the Pacific, Northwest FAO ocean region. The site covers an area of 822 km2 and is 22 km away from the closet coastline. The depth ranges from 0 to 173 m, mean annual sea surface temperature falls between 18.27 and 18.46 °C and mean annual chlorophyll-a concentrations found to range between 0.5 and 1.17 mg/m3.
Key biodiversity
3 species trigger IBA criteria at this Marine IBA. Seaward extensions around breeding colony; Kanmurijima and Kutsujima islets include key near-colony areas for breeding populations of Streaked Shearwater (LC) , Swinhoe's Storm-petrel (NT) and Japanese Murrelet (VU).
Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Kanmurijima and Kutsujima islets - Marine (Japan). Downloaded from
https://datazone.birdlife.org/site/factsheet/kanmurijima-and-kutsujima-islets--marine-iba-japan on 22/12/2024.