A small, natural, freshwater lake on Babeldaob island with some swamp vegetation and is the largest permanent freshwater body in Palau and the largest natural freshwater lake in the bioregional context. The nature reserve supports indigenous fishes representative of Palauan fish fauna and has a small breeding population of the CITES-Appendix I listed estuarine crocodile (Crocodylus porosus). The site includes bird species of conservation value such as the endemic Palau Fruit Dove (Ptilinopus pelewensis), Palau Fantail (Rhipidura lepida), Palau Flycatcher (Myiagra erythrops), and Palau Ground Dove (Gallicolumba canifrons).