Ngati Hine tribal leader Pita Tipene was also critical of the government consultation process.
"The government has had minimal consultation, comprising a letter to iwi runanga and some presentations at hui that were patronising and evasive. We also know that the broader public have been entirely locked out of the decision making processes," he said.
"All this is disrespectful and deceitful when we are talking about the impacts of some of the biggest issues facing the people of this country, and indeed the world."
He noted that the Waitangi Tribunal had last year found that Ngpuhi never ceded sovereignty to the British Crown.
Meanwhile, since the Foreshore and Seabed Act took effect, rights to explore and drill for oil reserves that lie beneath massive areas of seabed and continental shelf had been handed to corporations.
"So why does the government think they control the entire decision-making over deep sea oil exploration and drilling? Our customary authority has been recognised, and therefore the affected coastal hap are the decision-makers," he added
That position was been endorsed by Sonny Tau, who said iwi did not have the ability to make binding decisions on hap in regard to deep sea oil drilling.