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Toxic algae is a common name for toxic cyanobacteria - naturally occurring bacteria that live in shallow, stoney rivers like the Tukituki. Some cyanobacteria produce toxins that can be dangerous to humans and animals.
We know that the Tukituki catchment sometimes has high levels of toxic algae during the summer months.
There are signs at areas where there may be more toxic algae during a typical summer. The risk of contact can change in quickly, so it's important for the public to be very careful and look out for the algae. Toxic algae is easy to spot, and the signs show images of what to look out for.
Te Whatu Ora are responsible for these signs, and updates are posted on the Facebook pages for the Regional Council and Te Whatu Ora.
To find out more about toxic algae and its effects, check out our Toxic algae guide, or more Toxic algae information on the LAWA website.
Toxic algae happens naturally in shallow, stoney rivers, like the Tukituki. It looks like a mat that forms on rocks. It can be black, brown, green, or grey. When the river level drops, the algae can be seen on stones or at the sides of rivers which dry in the sun.
Yes, dogs love the strong musty smell of toxic algae mats, which is a problem as it interests them to go and find out more. Dogs will often eat the algae if given the chance, and only a small amount can be dangerous. Watch the videos on this page to find out more.
Living toxic algae: Thick dark brown or black mats attached to rocks under water |
Living toxic algae: Mats floating in shallow waters usually with air bubbles |
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Dead toxic algae: Attached or detached from rocks, the mats can be wet or dry and be grey, white, black, or brown
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+64 6 835 9200
159 Dalton Street. Napier 4110
Private Bag 6006, Napier 4142
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