Recent health assessments of dolphins in the Gulf of Mexico reveal alarming findings regarding microplastic inhalation, raising concerns about potential lung issues.
Researchers from the College of Charleston conducted routine health evaluations on a group of bottlenose dolphins from Sarasota Bay, Florida, and Barataria Bay, Louisiana, in May and June of 2023.
During these assessments, researchers utilized petri dishes positioned above the dolphins’ blowholes to capture and analyze any microplastics present in their exhaled breath. To maintain accuracy, a control sample was collected from a second petri dish held away from the blowholes.
The results were concerning; all examined dolphins exhaled microplastics, with a total of 54 particles collected, each measuring less than 500 microns. This finding indicates that these marine mammals are inhaling microplastics, as explained by team member Miranda Dziobak. “These particles are omnipresent, regardless of urbanization or human influence,” she stated.
Dziobak anticipates that similar outcomes are likely in marine environments worldwide, noting how microplastics are small and lightweight and can be transported over vast distances. Previous studies suggest that microplastics can travel through the air for thousands of miles, posing a global concern.
While the study did not assess the health impacts of microplastics on dolphins, existing research on humans indicates potential risks. “Inhaling microplastics can result in lung inflammation and various respiratory issues,” Dziobak noted, raising the possibility that dolphins could face similar health hazards.
Experts such as Nina Wootton from the University of Adelaide expressed interest in deeper investigations into the effects of microplastics on dolphin health. “Research shows health impacts are possible, but higher concentrations of microplastics are typically necessary for significant effects,” she explained.
The discovery of microplastics in marine life is increasingly common, as many species now show signs of contamination. Dolphins, often regarded as indicators of marine ecosystem health, highlight the pervasive presence of microplastics in our oceans.
Topics:
- Whales and Dolphins/
- Microplastics
