Two men have been fined after being caught illegally taking more than 40 rare shellfish from 90 Mile Beach.
The pair have been fined $500 each after being caught with 43 toheroa from the beach - a number the Ministry for Primary Industries described as "very large".
The toheroa fishery was closed across New Zealand 35 years ago after toheroa numbers began to plummet.
Ministry for Primary Industries spokesman Steve Rudsdale said the incident was extremely disappointing especially when toheroa on 90 mile Beach were just beginning to re-establish themselves.
"It's heartbreaking, really. If this sort of illegal take continues, it won't bode well for a fishery that is already very fragile. Even disturbing toheroa can have an extremely detrimental effect on them.