The group of atolls and reefs, home to some 10,000 people, is barely two metres above sea-level on average.
One study predicted that at the current rate the ocean is rising, Tuvalu could disappear in the next 30 to 50 years, the report said.
"We keep thinking that the time will never come," Reuters reported the Tuvalu deputy prime minister, Tavau Teii, as saying. "The alternative is to turn ourselves into fish and live under water,"
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