As part of Mayor Strike B. Revilla’s programs in environmental protection and management,   a mangrove plantation was started in Dulong Pulo, Barangay Sineguelasan near Island Cove.  Formerly planted with turnips in the past before it became a swampland, the mangrove area covered 40 hectares. Almost 20 hectares were already planted with 132,000 propagules acquired from Sariaya, Quezon.  A prototype of an eco-tourism site, the mangrove is one of the major programs of the city government in eco-agro-tourism. Migratory birds usually thrive in the mangroves during cold seasons.   Crabs, shrimps and snails are usually found in this mangrove plantation.