It is a sitio in Barangay Tanza, connected to the mainland of Navotas by a 500-meter-long (1,600 ft) bamboo bridge.

[4] Its mangroves and surrounding mudflats provide sanctuary for 11 species of migratory birds, including the Chinese egret, tern, kingfisher, gull and plover.

[1] Until the 1980s, Isla Pulo contained long stretches of white sand beaches and thick mangrove vegetation.

A waterbird census conducted in January 2017 reported a sharp increase in the number of bird sightings in the island to 11,782 from 5,302 the previous year, which was attributed to the decline of disturbance following the relocation.

The wetlands is a habitat and feeding ground for diverse crustaceans and shellfish, such as the rare black-faced spoonbill, freshwater bivalve, pinnidae, barnacles], and saltwater clams.