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Bahamas: Sharks Found with Cocaine and Other Substances in Their Systems

Published March 22, 2026, 14:13
Bahamas: Sharks Found with Cocaine and Other Substances in Their Systems

A team of scientists in the Bahamas has found that sharks near Eleuthera have cocaine, caffeine, painkillers, and other substances in their systems, indicating human pollution of the marine waters. Scientists from the Cape Eleuthera Institute analyzed blood samples from 85 sharks to detect illegal substances, stimulants, or narcotics. This is the first time sharks have been found positive for caffeine and acetaminophen worldwide, and the first time with cocaine and diclofenac in the Bahamas. The substances were found in 28 of the 85 sharks, with caffeine being the most common substance detected. The highest concentration of chemicals was found near a shark diving area, indicating that human activity contributes to pollution. Although it is not clear whether the substances cause physical harm to the sharks, researchers have identified differences in biological markers between infected and non-infected animals. The findings are important for the conservation of marine ecosystems and highlight the need to reduce human pollution.