Avalau is an
islet within the
atoll
An atoll () is a ring-shaped island, including a coral rim that encircles a lagoon partially or completely. There may be coral islands or cays on the rim. Atolls are located in warm tropical or subtropical oceans and seas where corals can gr ...
of
Funafuti,
Tuvalu
Tuvalu ( or ; formerly known as the Ellice Islands) is an island country and microstate in the Polynesian subregion of Oceania in the Pacific Ocean. Its islands are situated about midway between Hawaii and Australia. They lie east-northeast ...
.
described Avalau in 1896 "this islet is said to possess a spring of fresh water".
References
Islands of Tuvalu
Pacific islands claimed under the Guano Islands Act
Funafuti
{{tuvalu-geo-stub