A South Taranaki iwi is vowing to fight again to stop a mining company, who for the third time, is considering appealing against a High Court decision that stops them from operating off the Patea coast.

Debbie Ngarewa-Packer of Ngāti Ruanui says fighting to protect the seabed is nothing new for their iwi.

“We've been in the fight now for four years and we're expecting the way that things go that we'll have to do the full cycle.”

Trans-Tasman Resources (TTR) has a week to lodge the appeal, but Ngarewa-Packer says the company has used up all their arguments.

“They can't put up a new argument.

“The issue that they're fighting now in the courts is that the judge made the wrong decision, and what we've been saying the whole way through is, if you're going to put a community, an iwi, this nation, through a precedent-setting application like they're trying to do, you put your best foot forward first - and they haven't put their best foot forward because they simply don't have the best intentions.”

Ngarewa-Packer also says this situation highlights the mining company's lack of consideration for New Zealand laws and values.

“What we have seen with TTR is that they have difficulties in understanding what is legal and what is not, what is wanted by this country and what is not, and the degree of risk that they're prepared to take as a corporate entity in this country, environmentally, is not wanted.”

Te Karere sought comment from Trans-Tasman Resources but to no avail.

A decision on whether the company will appeal is expected to come out on September 25.