Along the Kubang Badak river, we can see the mangrove forest, there are 3 types of common mangrove species we can see; Rhizophora sp., Avicennia sp., and also Sonneratia sp. Mangrove forest plants grow closer densely to each other and compete to get sunlight for photosynthesis process. Rhizophora sp. is different from Sonneratia sp. and Avicennia sp. All Rhizophora sp. have arching stilt roots that emerge from the trunk.