SEABIRDS are often found with stomachs full of plastic, and now researchers in the US think they know why - degrading plastic smells like food to them. Albatross, petrels and other so-called tube-nosed seabirds rely on their sense of smell to find food, and one of the main olfactory cues is dimethyl sulphide, a compound released by algae when it is being eaten by a type of small, shrimp-like creature called krill.
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