Tabiteuea is an atoll in the Gilbert Islands, Kiribati, farther south of Tarawa. This atoll is the second largest and the most populated of the Gilbert Islands after Tarawa. The atoll consists of one main island, Aanikai in the north, and several smaller islets in between along the eastern rim of the atoll. The atoll has a total land area of 38 km2 (15 sq mi), while the lagoon measures 365 km2 (141 sq mi). The population numbered 5,261 in 2015. The islanders have customary fishing practices related to the lagoon and the open ocean.

The United States Exploring Expedition of 1838–1842 was an exploring and surveying expedition of the Pacific Ocean and surrounding lands conducted by the United States. The original appointed commanding officer was Commodore Thomas ap Catesby Jones. Funding for the original expedition was requested by President John Quincy Adams in 1828; however, Congress would not implement funding until eight years later. In May 1836, the oceanic exploration voyage was finally authorized by Congress and created by President Andrew Jackson.