Madu Ganga covers roughly 915 hectares, and some 770 of those hectares are water. Within that small compass sit 64 islands, fifteen of them inhabited. The estuary lies at Balapitiya, in Sri Lanka's Southern Province, where the river turns brackish before it meets the Indian Ocean. Sri Lanka declared the wetland a Ramsar site in 2003. Two narrow canals tie it to neighbouring Randombe Lake, so the system behaves as one body of water rather than two. Most Madu Ganga Boat Safari Booking tours trace that connection, though the route is far older than any itinerary. The wetland holds one of the island's last substantial mangrove stands. Fourteen of Sri Lanka's twenty-four true mangrove species grow here, their stilt roots stitching the shallows together. Botanists have recorded more than 300 plant species across the islands. Water monitors bask on fallen trunks. Kingfishers work the margins; cormorants dry their wings on bamboo stakes. Those stakes belong to the fishermen, whose brush-park traps follow a design that predates engine power. Mangrove belts here also absorb surge, and post-2004 surveys credited such fringes with reducing damage inland along parts of this coast. The lagoon remains a working waterway rather than a preserved one. Cinnamon built the district's economy. Dutch administrators turned the bark trade into a monopoly in the seventeenth century, and the peeling knives never left. Smallholdings on the islands still strip, roll and dry quills by hand, and the smell of fresh bark carries across open water. Kothduwa Raja Maha Viharaya occupies an island of its own, reached by a short path over water. Local tradition ties the temple to a sacred Bodhi sapling brought south for safekeeping, and to the custody of relics during unsettled centuries. Its shrine room is plain: whitewashed walls, a seated Buddha, lotus and jasmine left on the step. What distinguishes මාදු ගඟ is scale. The channels narrow to arm's reach inside the mangrove tunnels, where the canopy closes overhead and the light turns green. Beyond them the lagoon opens into sheets of water wide enough to lose the shoreline. That alternation, tunnel to open estuary and back, is the geography Madu Ganga Boat Safari Booking tickets exist to reach. It is also why Balapitiya sits on most lists of southern Sri Lanka landmarks.