As the city’s wetlands struggle for survival due to persistent construction activity and water pollution, a bunch of nature enthusiasts are hoping to transform some of these lesser known sanctuaries of tranquility into tourist spots. Recently, environmentalists organised walks along several coastal and mangrove areas in Sewri, Bandra, Andheri, Bhandup and Dahisar to sensitise nature lovers and the government to start an initiative to protect and promote the wetlands as tourist spots, instead of letting them fall into the hands of encroachers.