Researchers at the Oswaldo Cruz Institute in Brazil found cocaine in 13 Brazilian Sharpnose sharks caught off the coast of Rio de Janeiro.

Researchers tested sharks off of the Brazil coast for cocaine and found high levels of the drug in all of the animals, according to a new study. The study included 13 Brazilian sharpnose sharks.

Researchers at the Oswaldo Cruz Institute in Brazil found cocaine in 13 Brazilian Sharpnose sharks caught off the coast of Rio de Janeiro.

This marks the first documented instance of cocaine found in free-range sharks, with concentrations recorded at 100 times higher than any previously noted in aquatic species.

Scientists tested 13 Brazilian sharpnose sharks found along the Rio de Janeiro coast and found high levels of cocaine in their bodies.

Cocaine has been found in sharks off the coast of Brazil and may be changing their behaviour, scientists fear. Marine biologists tested 13 sharks of the Brazilian sharpnose type taken from coastal ...

They tested 13 sharpnose sharks caught near Rio de Janeiro and found the drug in the liver and muscle tissue of all 13 of them, researchers at the Oswaldo Cruz Foundation said.

Sharks off the coast of Brazil have cocaine in them and scientists believe the drug may be altering their behaviour. In a study conducted on 13 Brazilian sharpnose sharks from waters near Rio de ...

Scientists have found cocaine in the muscle tissue of sharks off the coast of Brazil in a study that shows marine animals are ingesting illicit drugs that end up in the ocean.

All 13 sharks examined were found to have unfiltered cocaine in much higher concentrations than in previous studies on other animals, indicating chronic exposure to the drug.

The researchers found concentrations of cocaine up to 100 times higher than previously detected in other marine animals in tests on the muscles and livers of the sharks.