He told media this means more cooperation in all areas of development between Polynesian countries.
Other members of the PLG are French Polynesia, Tonga, Tuvalu, the Cook Islands, Niue, American Samoa and Tokelau, while Easter Island and Hawai'i attend as observers.
One area where countries will start cooperating is the proposed regional submarine cable, Manatua, which is being driven by Samoa.
RNZI reports the cable aims to position Polynesia as a key player in the digital economy with fast and reliable connectivity.