kayaking the calm water of the mangrove forest river in amami oshima island

activity amami boat branch canoe dense destination ecosystem environment float forest green growth habitat island jungle kayak kayaking landscape leisure mangrove muddy natural nature outdoor paddle pathway rainforest recreation remote river bank root rowing salttolerant shore solitude sport swamp tidal travel tree trip tropical tunnel vacation water waterway wetland wilderness pond bark botany coast conservation ecology foliage lake leaves life light marsh plant reflection scenery shrub subtropic surface tide waterfront wild leaf oshima tourism bay dark fresh park sunlight