An oil spill response team will spend the weekend looking for signs of oil that leaked from the wrecked container ship Rena after Wednesday's storm.
Maritime New Zealand (MNZ) National On Scene Commander Rob Service said it was "impossible" to calculate exactly how much oil leaked from the wreck on Wednesday, but says it was a small amount.
He said while some of the oil appeared to reach the shoreline, it is unlikely to have had a significant impact.
A shoreline clean-up assessment technique (SCAT) team surveyed the beach from Mount Maunganui to Omanu yesterday.
They removed the larger deposits of oil, and MNZ says it is likely the smaller deposits will break down naturally in the tidal movement. SCAT teams are also heading to Maketu and Little Waihi today to see whether any oil has reached the shoreline there.