A recent study revealed a concerning phenomenon on the coasts of Brazil: reports of wild sharks getting positive for cocaine.  This discovery which was made by the scientists from the Oswaldo Cruz Foundation has greatly influenced the academic circle. In follow-up investigations of 13 male sharpnose sharks caught off the coast of Rio de Janeiro, the same team found that the animals’ muscle and liver samples contained relatively large amounts of cocaine. According to them, the cocaine concentrations in such samples reach the levels 100-fold higher compared to the levels identified in other marine organisms. The 13 sharks that were … Continue reading Brazilian Sharks Test Positive for Cocaine—100-Fold Higher Levels Than Other Marine Life