Biosecurity New Zealand, along with local mana whenua and the Northland Regional Council, is taking action after large amounts of exotic Caulerpa seaweed were found in the Bay of Islands. This discovery follows an earlier finding of the seaweed at Omākiwi Cove. The partnership aims to implement a Controlled Area Notice (CAN) to restrict activities and a Rāhui, with the extent of the CAN to be reviewed. A technical advisory group will explore suction dredging, a method used in California to control the seaweed, and a group will be sent to California to inspect the control measures in place. The partnership has been working to minimize the spread of the seaweed since its discovery in July 2021 and is urging the public to report any suspected finds to help prevent the spread.