Oil Spill May Be Pushing Sharks Toward Fla. Beaches

(June 11) -- The discovery of a weakened, disoriented tiger shark -- measuring more than 11 feet and weighing some 800 pounds -- in the surf of Nokomis Beach in Florida last month has become something of a poignant symbol for what scientists fear most from the gulf oil spill: the unknown effects of the massive underwater oil plume and dispersants on marine life beneath the waves.

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