Nukulaelae is an atoll that is part of the nation of Tuvalu, and has a population of 324 the largest settlement is Pepesala on Fangaua islet with a population of 247 people. It has the form of an oval and consists of at least 15 islets. The inhabited islet is Fangaua, which is 1.5 kilometres (0.93 mi) long and 50 to 200 metres wide. The easternmost point of Tuvalu is Niuoko islet. The Nukulaelae Conservation Area covers the eastern end of the lagoon. A baseline survey of marine life in the conservation zone was conducted in 2010.