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Mercury Island
:''not to be confused with the Mercury Islands of New Zealand''
Mercury Island is a small rocky island off The Diamond Coast, Namibia. Despite its small size it is recognised by Bird Life and other global conservation groups as one of the Important Bird Areas (IBAs) for its important coastal seabird breeding.
==Situation==
Mercury Island is situated in 800 metres offshore in Spencer Bay, 110 kilometres north of Lüderitz. The island is only 750 metres long (North-South) and about 270 metres wide, reaching a height of 38 metres above the sea. Steep, rocky, without vegetation, covered in a thick layer of bird guano, and riddled with a number of caves (one of which completely bisects the island), Mercury Island's name comes from the shaking which reverberates through the island during westerly wave action. Its nearest neighbour and like bird habitat is Ichaboe Island, about 65 kilometres to the south. With Ichaboe Island, Mercury is one of the two most important island seabird breeding sites along the Namibian coast. Consequently, it is permanently inhabited by a two-person bird research station, built on the remains of a bird guano mining dock〔(Namibia: Forbidden Land ). Infohub Travel.〕 along the northeast side of the island.〔(P D MORANT. BENGUELA CURRENT LARGE MARINE ECOSYSTEM THEMATIC REPORT NO. 5: INTEGRATED OVERVIEW OF THE COASTAL ENVIRONMENT BETWEEN THE CONGO RIVER MOUTH AND CAPE AGULHAS ). UNITED NATIONS DEVELOPMENT PROGRAMME/ENVIRONMENTEK, CSIR (South Africa). October 1999. pp. 78, 86.〕 The Island's 3 hectares are home to 16000 penguins, 1200 gannets and 5000 cormorants,〔(Mercury Island, Namibia ). Brady Gilchrist, Starship Millennium Voyage project, Thursday 15 February 2001.〕 which range tens of kilometres out to sea, and return to the island to breed.〔David Grémillet, Sue Lewis, Laurent Drapeau, Carl D. van Der Lingen, et al. (Spatial match–mismatch in the Benguela upwelling zone: should we expect chlorophyll and sea-surface temperature to predict marine predator distributions? ) Journal of Applied Ecology 2008, 45, 610–621〕
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