Two non-native invasive seaweeds (exotic caulerpa) have been found in New Zealand waters.
These unwanted organisms can spread rapidly, forming dense beds and potentially smothering native species.
Exotic caulerpa was first found at Aotea Great Barrier Island in 2021.
For more info on where else it has been confirmed see the maps showing locations of caulerpa
Boaties if you are heading out to these areas make sure you check the legal rules
Legal controls and rāhui are in place at some of these locations to stop the spread.
Keeping your boat and equipment clean is the best thing you can do to avoid spreading marine pests.
When out on the water, (with caulerpa in particular), before you move on, check your anchor and
chain when you pull it up.
Also check fishing or diving equipment for any attached seaweed.
If you 'See Weed', Bag it, Bin it - take it ashore for disposal in a rubbish bin
or put it back into the waters it came from.
That means any seaweed - you don't have to be an expert in identifying caulerpa.
If you spot the Caulerpa species, take a photo, record the location and go to
Report Pest online here or Pest and Disease Hotline 0800 80 99 66
Let's Protect our Paradise and stop the spread of marine pests.
Share
