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 backdrop bubble bubbles bubbley bubbly close close-up closeup detail detailed details free gel hairgel highlight highlights image macro ooze photo photograph picture red resource shampoo slimey somadjinn sticky stock textured UP viscous white blue cyan