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Sharks in the Bahamas test positive for caffeine, painkillers and even cocaine, study finds - CBS News
Overview
A marine study found measurable levels of caffeine, over-the-counter painkillers and cocaine in the blood of 28 sharks sampled in the Bahamas, indicating exposure to human pharmaceuticals and illicit drugs. Researchers warn these contaminants could affect shark physiology, behavior and overall health, with unknown consequences for predator-prey dynamics. The recent fatal shark attack on the Great Barrier Reef underscores that human-shark interactions carry immediate public-safety consequences as well as environmental ones, strengthening the case for studying how human activities alter shark behavior and risks to people.
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