Lalaguna Marsh is near the southernmost tip of Lamon Bay in Quezon Province. It is an inland freshwater marsh with dense reed beds and an abundant growth of other aquatic vegetation. The maximum depth of the water is 3 m. During the dry season (February-April), the water level recedes and about one third of the marsh dries out. Some boat navigation is possible in cleared areas. The marsh provides an important source of fish for local inhabitants, and supports a small reed cutting industry for basket making and mat weaving. There are coconut plantations, rice paddies and residential areas around the marsh.
Lalaguna Marsh is an important breeding and wintering area for a variety of waterfowl, especially Ardeidae, Anatidae and Rallidae, including the threatened Philippine Duck.
BirdLife International (2020) Important Bird Areas factsheet: Lalaguna marsh. Downloaded from http://www.birdlife.org on 03/12/2020.