Scientists say more research is needed to determine whether the drug makes the animals more aggressive.
In what sounds like the plot of a low-budget movie, scientists have discovered cocaine inside sharks caught off of Brazil, and they are concerned it may be changing their behaviour.
They said it may have come from illegal cocaine factories or from the excrement of drug users, through untreated sewage. Rachel Ann Hauser-Davis, a British scientist and member of the research team from the Oswaldo Cruz Foundation in Rio de Janeiro, told theHarris wins key endorsement, pays tribute to Biden's 'unmatched' legacyHowever, it was not known whether digesting the drug made the animals more aggressive or unpredictable in their behaviour.
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