Sharks living off the coast of Brazil have tested positive for cocaine, according to new research, the first time that the drug has been detected in free-ranging sharks.
Cocaine pollutes the sea due to sewage discharges from humans who use the drug, as well as the illegal laboratories that produce it, study co-author Enrico Mendes Saggioro, an ecotoxicologist at the foundation, told CNN on Tuesday.
And as a side-note: cocaine being dumped at sea was considered as a possibility, but was ruled out:
Previous research suggested that cocaine dumped at sea by traffickers could be responsible for contamination, but that is not the case here, said Mendes Saggioro. “We don’t usually see many bales of coke dumped or lost at sea here, unlike what is reported in Mexico and Florida,” he said.