Motutunga Atoll is roughly triangular in shape.

The reef surrounding the atoll is continuous, leaving no channels deep enough for ships to reach the lagoon.

[2][3] Spanish navigator Domingo de Boenechea sighted the atoll, which he called San Blas, on 9 November 1774 from ship Aguila.

[4][5] Motutunga belongs to the commune of Anaa that also includes the associated commune of Faaite with the atoll of Faaite and the uninhabited atolls of Tahanea and Motutunga.

This French Polynesia-related geography article is a stub.