"Particularly distressing has been the damage done to beach dune restoration work done by dedicated environmental groups.
"I was personally disgusted by that community idiot who, despite being alerted by a member of the public that a seal was sunning itself on the Ōtaki Beach sand ahead, proceeded to use his trail bike to hoon around the frightened seal," he said.
He wrote a letter to Police Commissioner Andrew Coster in November asking for assistance.
The mayor said he was pleased there would be an increased police presence - with two dedicated police staff on quad bikes that will cover nine beaches over summer.
