Great Barrier Reef polluted by pesticides

The Great Barrier Reef, already under threat from global warming, is also being affected by pollutants and pesticides from the land carried into the sea by flooded rivers, reported the Independent on Thursday.
Pictures taken this month by Nasa and US National Oceanic andAtmospheric Administration satellites indicate that coral is being affected by the run-off at a greater rate than previously thought, the report said. 
According to Australia’s Commonwealth Scientific and Industrial Research Organisation (CSIRO), they show sediment creating a hazy cloud in the water over the reef, blocking out sunlight and preventing photosynthesis, the process which keeps coral alive.
Andy Steven, a CSIRO scientist, said: “"Photos like these are a compelling reason for managers to go to farmers and say, we’ve got to make a concerted effort to reduce pollutants and sediments from getting into the water."

photo by Leonard Low