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How many sharpnose sharks will test positive for cocaine off the coast of Brazil by end of 2024?
3
Resolution / Starting Odds
20-50 • 25%
Less than 20 • 25%
51-100 • 25%
More than 100 • 25%
Scientific studies or credible news reports
Story
13 Sharpnose Sharks Off Brazil Coast Test Positive for Cocaine
Jul 23, 2024, 10:02 AM
Scientists have discovered that 13 sharks off the coast of Brazil, particularly sharpnose sharks near Rio de Janeiro, have tested positive for cocaine. The presence of the drug in the sharks' muscle and liver tissues is believed to be a result of cocaine entering the marine ecosystem, possibly through the city's sewerage system or from illegal drug labs. Marine biologists are concerned that the high concentrations of cocaine, reportedly up to 100 times higher than those found in other aquatic animals, may be altering the sharks' behavior. The phenomenon has sparked significant concern and interest among researchers and the public.
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Similar markets
Increased aggression • 25%
Altered feeding habits • 25%
Changes in migration patterns • 25%
Other • 25%
Yes • 50%
No • 50%
Sewerage system • 25%
Drug smuggling • 25%
Industrial discharge • 25%
Other • 25%
Increased aggression • 25%
Decreased feeding behavior • 25%
Altered migration patterns • 25%
No significant change • 25%
Yes • 50%
No • 50%
Brazilian government • 25%
Environmental NGOs • 25%
Academic institutions • 25%
Other • 25%
Oswaldo Cruz Foundation • 25%
Federal University of Rio de Janeiro • 25%
Brazilian Institute of Environment and Renewable Natural Resources (IBAMA) • 25%
Other • 25%
Yes • 50%
No • 50%
Yes • 50%
No • 50%
Sewerage system • 25%
Illegal drug labs • 25%
Runoff from urban areas • 25%
Unknown sources • 25%
Sharks • 25%
Sea Turtles • 25%
Fish species • 25%
Other • 25%
Fish • 25%
Sea Turtles • 25%
Sea Birds • 25%
Other • 25%