Reao atoll is home to 344 people and lies within the Tuamotu group of islands in French Polynesia (see Figure 1). The atoll is 24.5 km long and has a maximum width of 5 km. A small airport was opened in 1979.
Reao is a coral atoll — an island made of coral reef with a lagoon in the centre. Corals are small marine organisms that require certain conditions to live and flourish. They are found in shallow salt water at temperatures above 20°C in clear, sediment-free waters which are well supplied with oxygen and plankton.
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