Iwi felt the only way to restore the reef's pristine marine environment was to remove the wreck completely, he said.
"Iwi have no intention of simply rolling over and letting a large international corporation make a mess in New Zealand's backyard, leaving behind a legacy of toxic waste."
Buddy Mikaere, a cultural adviser to a large group of iwi, said iwi on Motiti Island and those on the mainland wanted all environmental damage cleaned up.
"There is a wall of iwi support from Tauranga to Whakatane solidly against leaving the wreck behind."
A spokesman for the owners and insurers last night said there would be no "fast and simple solution", but they were committed to dealing with the wreck "in the most safe and practicable way".
The site would be monitored regularly and modelling had shown the remaining material would rapidly disperse, although some contaminants could affect ecological regeneration.
MPs Grant Robertson and Gareth Hughes, environment spokesmen for Labour and the Greens, said any decision over the ship should reflect what was best for the environment and Bay of Plenty residents, and not cost.
The insurers will hold meetings with iwi and focus groups, and two drop-in days will also be hosted in Mt Maunganui next week.
What next?
*Rena's owners and insurers to confirm proposal to apply to leave part of the wreck on the reef. Could lead to a drawn-out resource consent process.
*Maritime New Zealand to release a review of its response into the initial grounding. Due this month.
*Report by the Transport Accident Investigation Commission into wider circumstances of the disaster.
*A court decision due to confirm a limitation decree and constitution of a $11.5 million compensation fund.