Red seaweed being monitored
Red seaweed being monitored
A potentially smelly
red seaweed that's washing ashore at several Coromandel
beaches in recent weeks is not harmful to the public.
The seaweed is suspected to be a red algae known as Spyridia filamentosa, or Hairy Basket Weed. It is native to New Zealand but also occurs across much of the world and is being monitored by Waikato Regional Council (WRC).
“While this is a completely natural event, masses of this non-toxic seaweed being washed up can cause an unpleasant odour so we’re keeping a close eye on what’s happening and testing to see exactly what type of seaweed it is,” said WRC's Coromandel zone manager Tonia Clarkson.
“Any smell is likely to get worse as the seaweed starts to break down. We’re hoping nature will deal with it but, because of the odour risks, it is important to monitor it and we’re keen to hear from people spotting large accumulations of it on their local beach.”
Significant amounts of red seaweed have washed ashore on Northland and other east coast beaches and now it's been reported at New Chums, Rings Beach, Matarangi and Cooks Beach.
“Over summer it’s actually common for this type of seaweed to accumulate in large clumps. Those clumps are normally found offshore and further north of the Waikato region but the recent strong winds we’re experiencing courtesy of El Nino have brought them our way,” says Ms Clarkson.
“Something similar happened last year on the Coromandel when we had close to El Nino weather but the red seaweed washing up was confined to Whangapoua. We’ve got staff out checking where else it might be and we’re keen to hear from anybody who’s spotted it at their local beach.”
People wanting to report sightings can call the council’s freephone 0800 800 401.
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