U.S. - Surfing - Morro Bay A surfer practices in Morro Bay, California. Surfers have been falling sick in growing numbers and many suspect that their illness is due to the red-tide phenomenon, an algae bloom that some people claim produces toxins that cause respiratory illness in humans. Coastal water pollution and increases in seawater temperatures appear to be causal factors in red tides. The cause of the pollution are agricultural run-off, air pollution and studies have shown that every eight months, nearly 11 million gallons of oil run off our streets and driveways and into our waters, the equivalent of the Exxon Valdez oil spill. The final factor, sewege, in California alone, 1.5 billion gallons of sewage containing 120 tons of sewage sludge are discharged into the Pacific Ocean every single day. Phil Klein/photo

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