The Guardian: ‘It stinks’ - Windermere plagued by blue-green algae as ‘toxic as cobra venom’
"As dawn broke over Windermere on Tuesday, Pete Kelly set off in his kayak from the north shore of England’s biggest natural lake, armed with three test tubes. The water did not look tremendously inviting, a film of luminous green algae lapping up on the shingle beach at Waterhead. You should have seen it last week before the rains came, he said: “All of the water up this end was really dense and green.””