About 600 anti-oil drilling protesters gathered in Auckland's QEII square in the central city following a hikoi from Cape Reinga.
The crowd swelled as the protest march made its way up Queen St towards Sky City chanting "Statoil go home, leave our seas alone".
Outside the SkyCity convention centre, Greenpeace spokesman Steve Abel said Statoil couldn't continue with its drilling agenda when it faced such large levels of opposition.
"As we stand here today in our hundreds and our thousands, we are in sync with with millions of people around the world."New Zealand had a compelling history of successful protest, including French nuclear testing in the Pacific and anti-apartheid protests, he said.
"Our oceans, we don't want to see them up for grabs."We want to be the first nation where deep-sea oil drilling is banned.