Bottlenose dolphins in Sarasota Bay in Florida and Barataria Bay in Louisiana are exhaling microplastic fibers, according to our new research published in the journal PLOS One.
Tiny plastic pieces have spread all over the planet—on land, in the air and even in clouds. An estimated 170 trillion bits of microplastic are estimated to be in the oceans alone. Across the globe, research has found people and wildlife are exposed to microplastics mainly through eating and drinking, but also through breathing.
Our study found the microplastic particles exhaled by bottlenose dolphins (Tursiops truncatus) are similar in chemical composition to those identified in human lungs. Whether dolphins are exposed to more of these pollutants than people are is not yet known.
Why it matters
In humans, inhaled microplastics can cause lung inflammation, which can lead to problems including tissue damage, excess mucus, pneumonia, bronchitis, scarring and possibly cancer. Since dolphins and humans inhale similar plastic particles, dolphins may be at risk for the same lung problems…