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Location High Seas
Central coordinates 17o 35.82' West  56o 9.26' South
IBA criteria A1, A4ii, A4iii
Area 13,346,267 ha
Year of IBA assessment 2012

Site description This Marine IBA is identified using tracking data. It falls within High Seas International Waters and the Atlantic, Antarctic FAO ocean region. The site covers an area of 133463 km2 and is 801 km away from the closet coastline. The depth ranges from 3414 to 5187 m, with a mean annual wind speed of 3.27 m/s, mean annual sea surface temperature falls between 0.13 and 1.21 °C and mean annual chlorophyll-a concentrations found to range between 0.2 and 0.93 mg/m3.

Key Biodiversity 1 species triggers IBA criteria at this Marine IBA. BirdLife analyses of tracking data estimates that 31205-46807 individuals of Grey-headed Albatross (VU) from South Georgia are present at the site during the Non-breeding (Dec-Feb) life-history stage.

Populations of IBA trigger species

Species Season Period Population estimate Quality of estimate IBA Criteria IUCN Category
Grey-headed Albatross Thalassarche chrysostoma non-breeding  1999  31,205-46,807 individuals  A1, A4ii  Endangered 
A4iii Species group - seabirds non-breeding  31,205-46,807 individuals  A4iii   


IUCN habitat Habitat detail Extent (% of site)
Sea   100%

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Recommended citation  BirdLife International (2016) Important Bird and Biodiversity Area factsheet: Atlantic, Antarctic 19 - Marine. Downloaded from on 22/10/2016

To provide new information to update this factsheet or to correct any errors, please email BirdLife