Traces of Caffein and Cocaine Were Found in Sharks

Sharks off the coast of the Bahamas have tested positive for caffeine, painkillers and even cocaine, according to a new study.

Marine researchers have analysed blood samples from 85 sharks of five different species. The sharks were caught around six kilometres off the coast of one of the Bahamas’ more remote islands, and 24 substances – both legal and illegal – were found in their blood.

The sharks had detectable levels of caffeine and over-the-counter anti-inflammatory drugs, and one had cocaine in its blood. Some of the sharks tested positive for more than one substance, reports CBS News.

Pharmaceutical and drug substances are an increasing concern in the oceans and other bodies of water, as they can potentially affect the health and behaviour of animals. Urban and tourist-heavy areas are particularly vulnerable, according to the researchers.