Madu Ganga is the second biggest wetland in Sri Lanka. Abundantly rich in biodiversity, the river covers at least 150 acres of land and consists of 14 mangroves out of the 24 mangrove species found in Sri Lanka. The Madu Ganga wetland is considered to be one of the last remaining tracts of mangrove forests. It is the best place to watch prawn farming and traditional fishing methods. It is also home to 300 species of plants and about 250 wildlife species which makes it a haven for the ecologists and the botanists.Visitors can book themselves for boat rides and bird-watching rides. The boat traverses through thick mangrove forests, which provide protection to a large number of aquatic birds, animal and plant species. One can get a chance to see crocodiles, water snakes, tree snakes, and wild boars in their natural habitat during the boat ride.

Fish spa has provided a treasured experience for locals as well as foreigners who are visiting Madu river estuary located in southern part of Sri Lanka. It has become a popular activity in community based tourism as water based recreational activity. Guests get the greatest opportunity of benefiting from a natural fish spa therapy. This creates a relaxing feeling as you receive a tingling massage from the dozens of toothless fish. They suck and gently nibble away at dry and dead skin.