Abanuea was an island of the Republic of Kiribati. It was a subdivision of the main Tarawa Island. The name translates to "the beach which is long-lasting".
Despite being part of the Republic, it disappeared under water in the 1990s. While uninhabited at the time, it was commonly used by fisherman. It and another island Tebua Tarawa disappeared in 1999.
References
Abanuea Wikipedia(Text) CC BY-SA