A field study was carried out from 2nd until 5th of June 2015 in North Sumatra, Indonesia. We focused on the Singkil swamp area located in west coast of Aceh Province where was influenced by large earthquake on 26 December 2005. The earthquakes triggered large tsunami, called Indian Ocean tsunami and subsequently caused land subsidence of about 1.0m to 2.0m along Singkil coast, resulting in the devastation of most of the inter-tidal vegetation communities due to the environmental changed. We explored 10 sampling sites and listed plant communities and populations starting from Sungai Alas public jetty until Padang Malako with the estimated distance of 1 km interval. Each of the sampling sites had a unique plant community and population but Nypa fruticans as well as Sonneratia caseolaris were observed to be dominated most of the sites and be found along the riverside. The plant communities changed from aquatic plants and shrubs to cogon grass (Imperata cylindrica) land and peat swamp forest in Padang Malako. Padang Malako was named after the Malako Tree (Tetramerista glabra), a tree species of peat swamp forest which the fruits of tree species are used by Sumatran Orangutan (SOU) as their source of food. This vegetation succession is needed in order to be protected from the intrusion of human disturbances. Perhaps it can restore the loss of plant communities during tsunami and recover the ecosystem function mainly in maintaining the water regulation, fish resources and maintaining habitats of critically endangered SOU which is endemic to Northern Sumatra.