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Sharks in Brazil test positive for cocaine, say scientists
First 'Cocaine Sharks' Discovered off Brazil | Scientific American
‘Cocaine sharks’ found in waters off Brazil | Science - AAAS
Not Afraid of Sharks? Well, Now They’re on Cocaine.
Thirteen Sharks Test Positive for Cocaine Off the Coast of Brazil
Sharks test positive for cocaine near Rio de Janeiro, Brazil - NPR
Why have Brazilian sharks tested positive for cocaine?
"Cocaine sharks": Predators off coast of Brazil test positive for …
Sharks off Brazil coast test positive for cocaine - BBC
'Cocaine sharks' in Brazil expose ocean pollution - National …