Sharks in Bahamian waters have been found with traces of cocaine and caffeine in their systems.
A recent investigation published in the journal Environmental Pollution revealed that sharks in the Bahamas are testing positive for various substances, including caffeine, painkillers, and, in one instance, cocaine, which is attributed to human-induced marine pollution. Researchers examined blood samples from 85 sharks belonging to five distinct species (lemon, Atlantic nurse, blacktip, Caribbean reef, and tiger sharks) near Eleuthera Island. Approximately one-third (28) of the sharks exhibited detectable levels of different drugs in their systems. Substances Detected: Caffeine emerged as the most frequently identified substance. Painkillers, particularly acetaminophen (Tylenol) and diclofenac (Voltaren), were also found. One shark tested positive for cocaine. These substances are thought to enter the ocean mainly through human wastewater, sewage discharge, coastal urban development, and tourism activities. In the case of cocaine, researchers hypothes...