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Sharks off Brazil coast test positive for cocaine
Sharks off the coast of Brazil have tested positive for cocaine, marking the first time the drug was found in free-ranging sharks, according to research.
Researchers from the Oswaldo Cruz Foundation tested 13 Brazilian sharpnose sharks near Rio de Janeiro, detecting cocaine in their liver and muscle tissue.
Researchers say increased cocaine levels in the sea result from heightened drug consumption and inadequate sewage treatment.
Wild boars in Brazil have tested positive for cocaine, according to a new study. The results show the extent of the cocaine trade in the country, which exports tonnes of narcotics to Europe.