coast coastline colors colours glistening glossy green greenery growing growth high-tide levels low tide mangrove-growth mangroves natural ocean ocean-edge ocean-waterline plants rocks rocky root-network Roots rough salt-resistant scrub security strength strong support tidal tide tides water waterline beach bleached branch coastal contrast debris driftwood evening high tide log nature scene shore shoreline simple stick stone sun tree weathered white wood color colored colour coloured distance distant expanse people receded receding receding tide sand sandy sea seashore seaside Sizes strolling sunlight sunshine waders wading dune-flora dunes flora grass grasses ocean edge ocean waterline sand-dunes Sandbar vegetation aerial aerial roots layers mangrove growth pebbles root network birds gulls pelicans seabirds seagulls waterbirds bird perch concept entrance gate gateway grassed area icon iconic japanese ocean views painted vermilion profane to sacred red sacred space seagull shinto space symbol symbolic torii traditional traditional Japanese gate transition vermilion views