aerial aerial roots beach coast coastline colors colours dunes glistening glossy green greenery growing growth layers levels low tide mangrove growth mangroves natural ocean ocean edge ocean waterline pebbles plants receded receding receding tide rocks rocky root network Roots rough salt-resistant sand sand dunes scrub security strength strong support tidal tides water waterline accumulations algae attached clinging color colour covered ebb-and-flood ebb-and-flow filamentous holdfasts light low-tide pounding sea seashore seaside seaweed shadows shapes shore shoreline slimy slippery spray sticking stones stony stuck sunlight sunshine surf surge surging tide velvety waves wet angles background barrier barriers coastal cruise-liner cruise-ship curved curves deck deck-side decks edges exterior Indian-ocean journey leisure leisurely-travel lines luxury onboard passengers perspectives railing railings rails safety secure side surface surfaces texture textures tourism tourists transport transportation travel view views wallpaper colored coloured distance distant expanse footprints industrial activity industrial area Jetty outcrop people pollution prints recreation relaxing rock formations sandy shade ships Sizes strolling variety waders wading ditch England field full Great Britain landscape nature somerset tree uk winter catastrophe disaster flood flooded hay roll gate