A Pacific Ocean Island, the Island of Beru is a part of the Republic of Kiribati. Located amongst the Tungaru, or South Gilbert Islands of the Pacific Ocean, Beru was previously known as Eliza, Francis Island, Maria, Peroat, Peru Island. The Beru Island is a reef which is around 15 Kilometers in Length (North West to South East) and has a width of about 4.75 Kilometers (North east to South West). At the very center of the reef of Beru Island there is shallow depression called the Nuka Lagoon. The Island of Beru is located exactly at 1o20' S latitude. With a distance of 96 km from Tabiteuea Atoll in the East and 426 km from the Tarawa Atoll in the East, the Island of Beru, like most of the Islands of Kiribati, is located near the equator.
The land mass of the Island of Beru covers almost one third of the shallow reef structure and is so positioned as to lean towards the northeast edge of the reef. Due to extensive developments of splits there has been the creation of the Tabiang Lagoon at the northern end which is nearly completely enclosed. Mangroves grow in this Tabiang Lagoon in the Island of Beru. There is also small Lagoon or barachois at the northern tip of the Island of Beru and it is surrounded by man-made fishponds. There is also a causeway across the inlet mouth of the Island of Beru and there is also a landing strip on the interior flats