"The commonality is the water."
Mrs Firmin said the Hawaiian group and Kimiora have been collaborating and sharing ideas for about three years, and there have been several visits and exchanges between Hawaii and Whanganui.
The Hawaiian delegation, led by Pelika Andrade, is in New Zealand for 15 days. The trip began with a visit to Ngati Porou lands on the East Coast, and the Hawaiians have also spent time in Hawke's Bay.
The group spent its first night in Whanganui at Te Ao Hou marae, before heading up to Whakahoro to begin the journey on the awa.
Mrs Firmin said there were many similarities between native Hawaiians and Maori.
"We're all Polynesians, and we're all navigators - Maori came to New Zealand through Hawaii.
"It's important to maintain our connections with each other."