Marine biologists found detectable levels of caffeine, cocaine and the over-the-counter painkillers in the blood of 28 sharks.

Add Yahoo as a preferred source to see more of our stories on Google. When you buy through links on our articles, Future and its syndication partners may earn a commission. Sharks in the Bahamas have ...

Add Yahoo as a preferred source to see more of our stories on Google. (Stephen Frink/The Image Bank/Getty Images) Sharks in the Bahamas have tested positive for cocaine, a new study concludes.

(WJW) – Sharks off the coast of the Bahamas have tested positive for substances including caffeine, painkillers and even cocaine, according to the findings of a new study on the effects of ...