“If you observe any affected wildlife, please do not touch it, instead keep a safe distance and call us on the number above.”
A Defence Force spokeswoman said it contacted harbour authorities and took immediate steps to clean up the leaked oil.
“Soaker pads were used to clean up surface oil and oil dispersed by crew on a RHIB [Rigid-Hulled Inflatable Boat] following the leak, which was caused by a defect to an oil cooler on the starboard engine,” the spokeswoman said in a statement.
“The source of the leak has been isolated and no further oil is leaking.
“The ship remains anchored in Akaroa Harbour.”
The ship’s company is working with Environment Canterbury staff, who are monitoring and assisting with clean-up efforts.
Canterbury Hits radio host Connor Kitto said his girlfriend had spotted the oil slick from her family bach nearby.
Kitto said an oil slick could be seen across the surface of the water, with multiple boats nearby using some type of net that seemed to be meant for cleaning up the oil.
Kitto said it was “not good enough” and while he did not know the cause of the oil spill, he hoped there would be some type of compensation for “protecting our taonga and the marine environment” that would be put in place.