Tens of thousands of tiny living mussels may hold the key to cleaning up Auckland’s polluted Waitematā Harbour, Newshub reports. On Thursday, Auckland Council and local iwi unveiled their unique “weapons on a rope” which have been barged in to improve water quality in a new public space opening on the city’s waterfront. Mussels are being heralded as a saviour for downtown Auckland, with 38 laden ropes stretching over half a kilometre in the harbour.