Marine scientists are again butting heads over a plan to protect endangered Māui and Hector's dolphins.
A threat management plan for the dolphins was the subject of vicious debate when it was released last year, labelling cat poo a greater risk to the dolphins than fishing nets.
Now a marine expert has published work tearing apart the methods underpinning the plan, prompting the man behind it to again defend his work.
RNZ's Rachel Thomas reports