Manly Cove is one of the worst hotspots in Australia, with every square metre of sand containing more than a thousand tiny particles of plastic.
Manly Cove is one of the worst hotspots for microplastic pollution in Australia, and the tiny particles are widespread throughout Sydney Harbour because of urban stormwater run-off.
Microplastic is defined as plastic particles less than five millimetres, and Ausmap focuses on fragments in the 1-5 millimetre range. Or as Dr Scott Wilson from Macquarie University, who developed Ausmap’s scientific program, puts it: “It’s about the size of a grain of rice.”samples tested in a US study, a 50 per cent increase since 2016.
The microplastics do not all originate in Manly, but are carried by stormwater into Sydney Harbour and tributaries such as the Parramatta River and Lane Cove River and washed into Manly Cove by the ocean currents. Whale Beach on the northern beaches was the next worst hotspot in Sydney, but only based on a single reading.
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