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What will be the primary source of cocaine contamination in the marine environment near Rio de Janeiro identified by the end of 2024?
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Resolution / Starting Odds
Sewerage system • 25%
Illegal drug labs • 25%
Runoff from urban areas • 25%
Unknown sources • 25%
Scientific studies and reports from the Oswaldo Cruz Foundation
Story
13 Sharks Off Rio de Janeiro Coast Test Positive for Cocaine
Jul 23, 2024, 09:43 PM
Scientists have discovered that sharks off the coast of Brazil, particularly near Rio de Janeiro, have tested positive for cocaine. This finding comes from a study conducted by the Oswaldo Cruz Foundation, which revealed that all 13 Brazilian sharpnose sharks examined contained cocaine, with concentrations up to 100 times higher than previously reported in other aquatic animals. The presence of cocaine in these sharks is believed to be due to contamination from the city's sewerage system and illegal drug labs. Among the 13 sharks tested, 10 were females and 3 were males. Researchers are concerned that the drug may be altering the sharks' behavior, posing potential risks to marine life and human swimmers. This is the first time cocaine has been found in free-ranging sharks, highlighting the environmental impact of the illegal drug trade.
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