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Cocaine and Caffeine Found in Bahamas Sharks' Blood, Raising Marine Pollution Concerns
Drug Contaminants Discovered in Bahamas Sharks
Sharks in the waters near the Bahamas have been found with traces of cocaine, caffeine, and various pharmaceuticals in their blood. A research team led by biologist Natasha Woznic analyzed blood samples from 85 sharks near Eleuthera Island. Approximately one-third of the sharks tested positive for caffeine and anti-inflammatory drugs like acetaminophen and diclofenac, with one shark also showing positive for cocaine.
Marine Pollution and Ecological Impact
According to the study, these contaminants likely enter the marine environment through water currents carrying sewage or other polluted water. The majority of the sharks studied were found near an inactive fish farm, a site frequently visited by divers. Woznic suggested that divers are the most probable source of exposure to these substances, either by urinating or dumping sewage in the water. The researchers observed changes in the sharks' metabolic markers, which could potentially influence the animals' behavior, though further research is needed to determine the full extent of these effects.
Urgent Need for Conservation Strategies
This discovery points to the severe impact of human activity on marine ecosystems, even in areas often perceived as pristine. The study authors emphasized the limited information available on how contaminants of emerging concern (CECs) interact with the unique physiology and detoxification systems of elasmobranchs (sharks and rays). This knowledge gap hinders the assessment of ecological risks and population-level impacts, making it difficult to develop effective conservation strategies for this already high-risk group.
*Source: YouTube: WION (2026-03-26)*
