Marine researchers have discovered traces of cocaine, caffeine, and various pharmaceuticals in sharks off the coast of the Bahamas, according to a new study reported by CBS News. The study, conducted by marine scientists, analyzed blood samples from 85 sharks representing five different species. The sharks were captured approximately six kilometers off the coast of one of the Bahamas' more remote islands.
In the blood samples, researchers reportedly found 24 different substances, including both legal and illegal compounds. The sharks showed trace levels of caffeine, over-the-counter anti-inflammatory medications, and one shark tested positive for cocaine in its bloodstream. Some sharks tested positive for more than one substance.
According to researchers, pharmaceutical and drug substances are becoming an increasing concern in oceans and other water bodies, as they can potentially affect animal health and behavior. Urban and tourist-heavy areas are particularly vulnerable to this type of contamination, the scientists noted.