dead fish flies fly grass insect polluted pollution rot water agua basura bubble can coast debris dumped garbage h2o mar plastic plastico rock sea sea weed seaweed water pollution estuary mudflat pollute rubber rubbish spoil tire tyre waste waterweed weed advice alert appropriate behavior appropriate behaviour avoid black care concern danger dangerous denied directions not allowed not permitted permission denied prohibited prohibition protect protection red rules safety sign signs toxic toxicity warning warning sign water toxicity weathered white worn announcement appropriate-behavior appropriate-behaviour be-careful beware caution communicating communication deep health information informing not-allowed not-permitted permission-denied risk risks risky unhealthy warning-sign water-pollution water-toxicity contaminated contamination breakage broken circular concrete corroded corrosion cracked cracks damage damaged deteriorated deterioration drain drain-pipes drainage pipe ripples rippling river riverside round urban wavelets bark carbon carbon dioxide CO2 crack death deposit die dioxide disaster dye dying earth environment film fishmonk greenhouse kill killed natural nature poison poisoned polluting ripple rippled root shore textural texture textured tree unnatural wet abandoned boot brown dirty half left lonely Mud water boot