Researchers Find Microplastics in Caddisfly Casings From 1970s, Hints at Long-Term Contamination Risk‎

The team of biologists from the Naturalis Biodiversity Center, Netherlands, has identified microplastics on the casings of claddisly. The research was proven when blue-colored plastic was found on a casing dated back to the 1970s. The team observed 549 casings before concluding their research and findings.