There might not be as many microplastic fibres in oceans as we feared | New Scientist

There might not be as many microplastic fibres in oceans as we feared | New Scientist:
"Most of the microfibres polluting our oceans – which have long been assumed to be plastic – are actually natural fibres like cotton and wool. 
But we don’t yet know whether these fibres pose the same health risks to marine organisms.
Textile microfibres are major contributors to marine pollution because they are readily shed from clothes during general wear and tear and laundering, and drift through the air or wash down drains into waterways.
...Previous ocean surveys have tended to count all microfibres as plastic, based on the assumption that natural fibres like cotton and wool biodegrade too quickly to persist in marine environments...
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