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This proposal has been prepared by the Ocean and Islands Programme (OIP) within the Pacific Islands Applied Geoscience Commission (SOPAC) in collaboration with the National Institute of Water and Atmospheric Research (NIWA). It has been prepared in response to an invitation1 from the Secretariat of the Pacific Regional Environment Programme (SPREP) to assist the Cook Islands in deriving coastal related information to underpin and inform climate change adaptation decisions for coastal areas of Mangaia Island.

The Cook Islands comprises 15 islands with a total land area of 237 sq km and a maximum height above sea-level of 652 m. The islands are scattered over an Exclusive Economic Zone (EEZ) of 1.8 million sq km; one of the largest EEZ’s in the South Pacific.

This report presents the results of studies made on five Pacific lagoons located at Suva, Fiji; Vila, Vanuatu; Tarawa, Kiribati; Tongatapu, Tonga; and Marovo, Western Province, Solomon Islands. Studies were made on water quality by physical, chemical and microbiological analyses. Analyses of shellfish and sediments were also completed for some sites.