"Burnouts, wheelies and donuts are devastating, particularly to juvenile toheroa and tuatua," he said.
"I have considerable video evidence to support the fact that thousands can be killed in a single accelerating turn. It is simply not possible to to 90 Mile without seeing people ripping up the beach in cars, quads, trucks or bikes, apparently having no concern for the damage they are doing.
"Perhaps locals who genuinely have the best interests of the beach and its environs at heart need to start making their distaste apparent. Filming offenders, who could be fined up to $20,000 for disturbing toheroa, would be a good start," he added.
"Some signs informing people of the repercussions for damage done would be a good idea too."
The Ministry for Primary Industries had twice told him that it was not in the position to deter driving over shellfish beds, however. The beach was classed as a road, giving the public access as of right, while traffic came under the jurisdiction of the police, the Far North District and Northland Regional councils.
"Although the offence of disturbing toheroa is one of strict liability, in order to prove a case we would need to show that there was a deliberate act on the part of the driver in an area where the driver knew there was a likelihood of disturbing toheroa," it added.