Northern fulmars and Cory’s shearwaters are masters of the sea and air, gliding above the waves and plunging into the water to snag fish, squid, and crustaceans. But because humans have so thoroughly corrupted the ocean with microplastics—at least 11 billion pounds of particles float at the surface, and that’s likely a huge underestimate—their diet now also includes substantial amounts of synthetic poison.
A study published today in the journal Nature Ecology & Evolution shows that those microplastics (defined as particles under 5 millimeters long) might be altering the seabirds’ gut microbiomes, with as-yet-unknown implications for their health. Another recent paper introduced the world to “plasticosis”: severe scarring in the digestive system of birds that had
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