Shell Bay was home to endangered wildlife, including the yellow-eyed penguin and the spotted shag.
The regional council said it was assessing the situation and response options to safely minimise the impact of oil and debris on the environment.
Regional on-scene commander Emma Parr said the current conditions were “extremely challenging and unsafe” due to the coastline and forecasted weather.
“We are currently monitoring the situation and working with DoC with guidance from Massey University to initiate a wildlife response,” she said.
Boaties had been asked to avoid the area.