Sharks in the Bahamas Test Positive for Cocaine, Caffeine and Painkillers, Study Finds
- Apr 5
- 1 min read
Sharks in the Bahamas Test Positive for Cocaine, Caffeine and Painkillers, Study Finds
A new study found that sharks near Eleuthera Island in the Bahamas had measurable traces of human drugs in their blood, including cocaine, caffeine, acetaminophen and diclofenac.
Researchers tested 85 sharks across five species and found detectable levels of at least one of those substances in 28 animals, or about one-third of the sample.
The researchers say the findings add to growing evidence that human pollution is reaching marine ecosystems in ways that are still not fully understood.
Because the samples were taken from blood rather than muscle or liver tissue, the results may reflect more recent exposure to these contaminants. The affected sharks included Caribbean reef sharks, nurse sharks and lemon sharks.
Scientists also observed changes in some biological markers in the contaminated sharks, which could signal effects on tissue function or behavior, though the long-term consequences are still unclear.
The study’s authors say the bigger concern is not sensational ideas about aggressive “drugged sharks,” but the broader health and stability of shark populations exposed to human-made pollutants.
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