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Didymo has made its way into the Haast River on the West Coast.
Biosecurity New Zealand said there should be no significant changes for river users but those informed of the find included the Narnia film crew.
Didymo has made its way into the Haast River on the West Coast.
Biosecurity New Zealand said there should be no significant changes for river users but those informed of the find included the Narnia film crew.
The 19-year-old disappeared without her wallet or mobile phone.