Indian Ocean, Western 73 - Marine

Country/territory: High Seas

IBA Criteria met: -
For more information about IBA criteria please click here

Area: 25,498,223 ha

Site description
This Marine IBA is identified using tracking data. It falls within High Seas International Waters and the Indian Ocean, FAO ocean region. The site covers an area of 254982 km2 and is 1459 km away from the closet coastline. The depth ranges from 3896 to 5668 m, with a mean annual wind speed of 2.26 m/s, mean annual sea surface temperature falls between 26.33 and 27.8 °C and mean annual chlorophyll-a concentrations found to range between 0.08 and 0.14 mg/m3.

Key biodiversity
1 species triggers IBA criteria at this Marine IBA. BirdLife analyses of tracking data estimates that 333-333 individuals of Red-Tailed Tropicbird (LC) from Nosy Ve are present at the site during the Non-breeding (Year-Round) life-history stage.

Recommended citation
BirdLife International (2021) Important Bird Areas factsheet: Indian Ocean, Western 73 - Marine. Downloaded from on 05/12/2021.