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Using a non‐invasive technique to identify suspected microplastics in grey seals ( <i>Halichoerus grypus</i> ) living in the western North Sea
Summary
Faecal samples from living wild grey seals in the western North Sea were analyzed for suspected microplastics, representing the first non-invasive record of microplastic exposure in this wild pinniped population. The study demonstrates that faecal analysis can provide indirect evidence of microplastic ingestion in free-ranging marine mammals without requiring capture or euthanasia.
The present study indicates that marine mammals are ingesting microplastics and that faecal material can be used to indirectly and non-invasively record microplastic uptake data in pinnipeds. Since the current paper is the first to document potential microplastic exposure among wild, living and free-ranging grey seals of the western North Sea, further research is needed to begin to understand the biological significance of these findings.
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