abstract angles appearance background boards bollards cool dark darkened decking environment environmental gray grey hand-rails Jetty light lined lines marine-bollards old pier posts railing ripples rippling river riverside rough shade shadows shady sunlight sunshine support surface surfaces texture textured textures vibrant view wall water water's-edge weathered wood wooden worn agitated agitation bubbles bubbling contaminated contamination edge edges edging flow flowing foam foaming froth frothing frothy inlet mixed mixing pattern patterning patterns polluted pollution soft stirred stirring stream surfaced swirling swirls toxic toxicity variation varieties variety white beams below beneath bridge concrete deck fishermen fishing lower lower-deck perspectives piers pillars reflections secure solid strength strong structure structures supportive thick under undercover underside blue closeup deep eternity freezing fresh frost Geological phenomenon motion sea wave waves wet afloat aquatic aquatic-plants floating green greenery leaves lilly-pad peaceful plant poliage pond pool still tranquil water-lillies