dense mangrove forest in amami oshima island

adventure alone amami aquatic bay boat calm canoe canyon clouds coast coastline conservation countryside destination ecology environment forest green island japan jungle kayak lake landscape mangrove mountain natural nature oshima outdoor panorama paradise park rainforest reflection river scenery scenic sea shore shoreline tide tourism travel tree tropical water waterfront wilderness blue botany ecosystem growth muddy plant bank root salttolerant tidal wetland wild dense seashore leaf