It is an arm of the Philippine Sea in Davao Oriental province formed by the Guanguan Peninsula which separates it from the Mayo Bay on the east and the Pujada Peninsula which separates it from Davao Gulf on the west.

[2] It covers 21,200 hectares (52,000 acres) protecting the bay and its coastal area including its four islands.

[2] Pujada Island near the bay's entrance is covered with bushes and trees and has a small lighthouse located at its southeastern end.

On the east side of the bay connected to the Guanguan Peninsula by a rocky ledge with depths of 9.2 metres (30 ft) is Uanivan Island.

[1] The bay is home to 25 genera of hard and soft corals, the most abundant of which belong to the genus Montipora, Acropora and Porites.