abstract algae background bacteria bacterium bog canal environment environmental fen goo gooey green grunge grungy lake marsh mat nature plant poison poisonous pond scum Slime slimy stagnant swamp texture thick toxic water weed wet anas-superciliosa aquatic-bird Australian bird black-eye-stripe brown-duck common dark-brown duck fauna fowl grey-duck omnivore omnivorous Pacific-black-duck ripples rippling swimming waterbird waterfowl widespread wild-duck appropriate-behavior appropriate-behaviour black blue care communication danger dangers denied no-diving not-allowed not-permitted permission-denied prohibited prohibition red risk risks risky shallow sign signs swimmers warning white aim aimed cool cooling dangerous direction directional fountains interior lighting lights multiple protruding rest area row shooting shopping center shopping centre shopping mall spout spouting spouts squirting unguarded wall aqua beauty bright bubble circle clean clear close-up color drop glass illustration juice light liquid macro orange pattern purity rain reflection refreshing splash surface transparent wallpaper wash yellow animal beak beautiful birding croaking eye feather female forage garden great Heron India karnataka leaf life Mangalore monsoon Night Heron Nycticorax outdoor spring summer tail wetland wharf wildlife wing Armeria bay cliff clifftop coastline Cornish cornwall England english fence footpath granite granitic Great Britain hard headland hillside inlet natural ocean path plants rocks sea shore thrift tide track trail view waves angles appearance beams below beneath bridge concrete deck lower lower-deck perspectives piers pillars reflections secure solid steel strength strong structure structures surfaced surfaces textured textures under undercover beach cove flow flowers incoming racing red campion sand sandy Silene dioica wild