Funafuti, chief atoll of Tuvalu, S Pacific. It comprises 30 islets of a reef 13 mi (21 km) long, with a land area of c.1 sq mi (2.6 sq km). The islet of FongafaleThe atoll was discovered in 1819 and became part of a British colony in 1915. An expedition led by Sir Edgeworth David in 1897 proved the Darwinian theory of atoll formation (see coral reefs) by sinking a 1,100 ft (335 m) bore into the island.

Motuloa is an islet in the atoll of Funafuti, Tuvalu. It lies on the southeastern rim of the atoll and is 800 meters long northeast-southwest, but only 50 meters wide. It is only about 25 meters southwest of Telele and can be reached by foot from it during low tide. The islet is densely vegetated.

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